[GUIDE][NORD/AVICII] Noob friendly guide to Unbrick/Restore Stock OxygenOS Firmware - OnePlus Nord Guides, News, & Discussion

Generic Disclaimer: By doing any of the process listed below you accept complete responsibility over any of your actions, I will not be responsible if you end up causing hard brick, data loss or any kind of loss to your personal property.
Hii XDA fellows,
So I have seen many people asking for noob friendly guide to restore original oxygen os firmware or basically unbrick device. There are several thread on this already but trust me I have tried them all and in my case I had to use my own brain. So I have compiled a noob friendly guide which I,myself have used to unbrick my device.
small warning this will wipe all of your data.
Firstly I wants to thank Some_Random_Username for bringing up MSM Unbrick tool for OnePlus Nord. His guide to unrick nord is also fairly good enough but in my case I was stuck in bootloop after installing a rom. My phone was not even booting to Qualcomm EDL Mode so that I can use MSM Tool.
Lets start with pre-requisites:
You must have unlocked bootloader.
Original Oneplus Type - C cable.
Windows PC.
ADB debugging turned on your phone.
Firstly Switch off your device, which I think most of you have already have as the device is bricked but in case your phone is stuck in bootloop or recovery or bootloader menu itself then try holding down voume up button and power button together hold them down till you get heptic feedback and screen goes off. Let it be cool down for about a minute.
Now Setup your PC:
Download MSM tool to from this guide : Click here
Setup adb environment in your PC if you havent already setup follow this guide
Download Qualcomm EDL drivers from here: Click here
Now download Unofficial TWRP recovery by Mauronofrio from here
On your PC right click on start menu icon and start Windows Powershell(Admin) and type this command bcdedit /set testsigning on This will turn off driver signature verifications on windows you will be required to restart your pc now after you restart your pc will boot into test mode and you'll see a watermark stating the same in bottom left of your desktop. Worry not we will undo this after we have finished restoring.
install Qualcomm EDL drivers by running the setup listed above.
Unzip MSMTool there you will see a file named MsmDownloadTool V4.0.exe run it, it'll take some time but after you see a pop up asking for user type user name and password, Select other as user type and leave other stuffs blank as it is and click next.
In the next window, In the target button select O2 while using global tool or India while using indian tool or EU when using european tool.
Now you have to boot into Qualcomm Emergency Download Mode
You can do this in several diffrent ways but one I am listing here is recommended :
Boot into fastboot/bootloader mode by pressing and holding Volume up, Volume down and power button together when you see a Menu pop up on your screen you can let go all the fingers at once.
Now connect your phone to your PC and go to that folder where TWRP recovery is located. Hold Shift button and Right click inside that folder you'll see an option "Open powershell window here click on it. In the powershell window type
fastboot devices and press enter your device will be listed as fastboot devices in powershell window. Now type
fastboot boot twrp1.img press enter
your device will boot up in TWRP recovery in twrp recovery go to reboot section and select Edl, This will boot your phone Edl mode your screen will go off as soon as it happens in the MSM tool window you'll see a device listed as com3/com5/com7.
Click on start button the restoration process will begin. Wait for about 400 secs and your device will automatically boot up.
Voila you've successfully unbricked your phone.
If you want to exit from Driver test mode on your pc simply start a powershell window with admin rights and type
bcdedit /set testsigning off
and restart your PC.

So first off all i want to say thanks for this guide.
So , i have a problem with my phone getting reconized by my pcs, so, my Phone just works fine but i want to restore it to stock, i'm using aospex 8.3.
Since a few days my phone dosnt get reconzied by my pc, i've tried windows and linux, both installations cant find my phone, i tried diffrent pc's,usb cables, driver, new installations of windows and linux mint, other phones dont have this problem, tried resetting , everything, do you have a idea what i could try or could it be just my phone port thats damaged and cant transfer data anymore, if anyone has an idea i would really be happy about an answer , thanks!

peppanzer said:
So first off all i want to say thanks for this guide.
So , i have a problem with my phone getting reconized by my pcs, so, my Phone just works fine but i want to restore it to stock, i'm using aospex 8.3.
Since a few days my phone dosnt get reconzied by my pc, i've tried windows and linux, both installations cant find my phone, i tried diffrent pc's,usb cables, driver, new installations of windows and linux mint, other phones dont have this problem, tried resetting , everything, do you have a idea what i could try or could it be just my phone port thats damaged and cant transfer data anymore, if anyone has an idea i would really be happy about an answer , thank
Click to expand...
Click to collapse
Seems like it's a software issue probably a bug in your rom rich out to the developer he might help you, as you have tried both with Linux and windows i don't think it's a driver issue, it could be an issue with the hardware also but chances are pretty low for this to happen. Try flashing other roms if you have backup of your phone, use orange fox recovery it has an option of taking nandroid backup.

IamAlok said:
Seems like it's a software issue probably a bug in your rom rich out to the developer he might help you, as you have tried both with Linux and windows i don't think it's a driver issue, it could be an issue with the hardware also but chances are pretty low for this to happen. Try flashing other roms if you have backup of your phone, use orange fox recovery it has an option of taking nandroid backup.
Click to expand...
Click to collapse
the thing is that i cant flash other roms, my phone dosn't gets recognized in fastboot, recovery and edl, so with the aex recovery installed i have no chance to change the rom without a pc, reached out to the dev but seems i'm the only person with the proplem, but thanks for helping.

Related

How to fix partion problem !

How to fix partion problem !!!
After countlss hours of messing with the LG P769 This is how i got into S/W mode to work !:laugh:
ASSUMING you know how to install fastboot drivers there are instructions on the forum ...so follow those guide note fastboot drivers work best on windows 7 windows 8 was giving me hard time ...
1.install fastboot drivers
2.run lelus script at the same time hold vol+ button once the script shows the OMAP device close the script and immediately put the battery back in .The LG phone will boot into S/W mode !
Make sure you write down your imei or serial number AND make sure battery is fully charged . then
Now simply use the LG software tool or the KDZ offline flasher look around the forum for how to guides
Thats it
tawhid111 said:
How to fix partion problem !!!
After countlss hours of messing with the LG P769 This is how i got into S/W mode to work !:laugh:
ASSUMING you know how to install fastboot drivers there are instructions on the forum ...so follow those guide note fastboot drivers work best on windows 7 windows 8 was giving me hard time ...
1.install fastboot drivers
2.run lelus script to get into fastboot at the same time hold vol+ button once the script shows the OMAP device close the script and immediately put the battery back in .The LG phone will boot into S/W mode !
Make sure you write down your imei or serial number AND make sure battery is fully charged . then
Now simply use the LG software tool or the KDZ offline flasher look around the forum for how to guides
Thats it
Click to expand...
Click to collapse
So you solve it! :good:
:/
tawhid111 said:
How to fix partion problem !!!
After countlss hours of messing with the LG P769 This is how i got into S/W mode to work !:laugh:
ASSUMING you know how to install fastboot drivers there are instructions on the forum ...so follow those guide note fastboot drivers work best on windows 7 windows 8 was giving me hard time ...
1.install fastboot drivers
2.run lelus script at the same time hold vol+ button once the script shows the OMAP device close the script and immediately put the battery back in .The LG phone will boot into S/W mode !
Make sure you write down your imei or serial number AND make sure battery is fully charged . then
Now simply use the LG software tool or the KDZ offline flasher look around the forum for how to guides
Thats it
Click to expand...
Click to collapse
Still unable to do it, when I plug the cable holding vol+ it just reboot normally :/
foreverman said:
Still unable to do it, when I plug the cable holding vol+ it just reboot normally :/
Click to expand...
Click to collapse
Then try enter in lelus fastboot mode, ad then flash x-loader, uloader, boot.img and recovery.img from stock rom for your device type model. Then repeat steps 1 and 2
Where can I find the lelus script?
Sent from my Note II
Sorry for reviving such an old thread, but oh well...
Your procedure doesn't seem to work with my device. Just to make sure we are using the same driver packages, can you post a link to the fastboot driver you have successfully used?
My L9 is always showing this "partition doesn't exist" error message, no matter what I try. Lelus's script seems to do the job and the phone is detected as a fastboot device, and can even be detected in LG Flash Tool (using a 910K cable), but flashing will stop after a little over 2 minutes, because the phone disconnects. During all of my attempts, the screen stays black.
Any hint?
ciccillover said:
Sorry for reviving such an old thread, but oh well...
Your procedure doesn't seem to work with my device. Just to make sure we are using the same driver packages, can you post a link to the fastboot driver you have successfully used?
My L9 is always showing this "partition doesn't exist" error message, no matter what I try. Lelus's script seems to do the job and the phone is detected as a fastboot device, and can even be detected in LG Flash Tool (using a 910K cable), but flashing will stop after a little over 2 minutes, because the phone disconnects. During all of my attempts, the screen stays black.
Any hint?
Click to expand...
Click to collapse
Then you need a Technician with a Octopus Box to repair your partition table...
ciccillover said:
Sorry for reviving such an old thread, but oh well...
Your procedure doesn't seem to work with my device. Just to make sure we are using the same driver packages, can you post a link to the fastboot driver you have successfully used?
My L9 is always showing this "partition doesn't exist" error message, no matter what I try. Lelus's script seems to do the job and the phone is detected as a fastboot device, and can even be detected in LG Flash Tool (using a 910K cable), but flashing will stop after a little over 2 minutes, because the phone disconnects. During all of my attempts, the screen stays black.
Any hint?
Click to expand...
Click to collapse
Can you boot into recovery? We now have a custom recovery for locked bootloaders (and CM roms). If you can get into recovery, I would try some adb commands to mount the partitions.
No, no recovery. Just to make sure that I'm not doing it wrong, what is the key combination to boot to recovery?
I have also tried:
Code:
fastboot boot some_recovery_image.img
It says ok, but the phone just hangs at the black screen and becomes undetectable as a fastboot device, until I pull the battery. So, unless the some_recovery_image.img is unsuitable for my P760 (which may be!), there is something seriously wrong I think.
Or maybe I can try the same command with the custom recovery for bootloader locked phones... Where can I find it?
ciccillover said:
No, no recovery. Just to make sure that I'm not doing it wrong, what is the key combination to boot to recovery?
I have also tried:
Code:
fastboot boot some_recovery_image.img
It says ok, but the phone just hangs at the black screen and becomes undetectable as a fastboot device, until I pull the battery. So, unless the some_recovery_image.img is unsuitable for my P760 (which may be!), there is something seriously wrong I think.
Or maybe I can try the same command with the custom recovery for bootloader locked phones... Where can I find it?
Click to expand...
Click to collapse
Your EMMC partition is wiped or fried... you really need a JTAG service or a Box like octopus because your L9 is Hard-bricked...
Thanks for your opinion. Yet, I still want to hear from others.
I'm running into more and more problems with the L9 as their me grows.
-Fastboot doesn't work under Windows 8.1 and 10, but under the now obsolete(for me) Windows 7, unlike my other devices, which are fine with Win 10.
-ADB seems to work, but requiring the device to be still able to boot.
-I always boot to recovery from within Android as long as the L9 ain't bricked. After a failed rom install, during which the sd card failed(could no longer write or be formatted afterwards, the last time stamps of files and folders were set during the failed install) I discovered a problem with TWRP(Artas182x's and Edwin's), which may have been present since a long time: Trying to invoke TWRP via keypress will brick the device!
So, if my P760 no longer boots, there's only download mode available, sort of the final line of defense.
-There's sort of a trick if even download mode fails: After a failed attempt unplug phone, force switch-off, if the phone is in brick state. Then switch on, force switch-off again, and only then attempt download mode again. And have patience while holding down the vol button, it might take up to 20 seconds for the phone to switch itself on into download mode. (A single forced powerdown will cause Fastboot NOT to work the next time)
But I'm absolutely clueless about the recovery issue, for now TWRP is semi-working, can only be accessed via Android, as long as the phone is fully working.
W/o Fastboot, I now have flashed stock rom several times and rooted it with Kingo rooter just to be able to run Flashify to install TWRP. If Flashify is the culprit for the TWRP issues, I could need a recommendation for a better working app.
ciccillover said:
Thanks for your opinion. Yet, I still want to hear from others.
Click to expand...
Click to collapse
Tried OMAP flasher ? It needs memory configuration file in order to work with our device
No, I didn't. I have sold the phone for spares.
Inviato dal mio LG-D855 utilizzando Tapatalk
I never needed the OMAP drivers and tools. As they are ancient, they will probably make even more problems with newer Windows versions.
I could by no means invoke Fastboot on this device with Windows 8.1 and 10, Seven worked. So you had to go for Download Mode instead to recover to stock rom, then root with the Kingo tool, then install TWRP via Rashr or Flashify, the most time consuming way to recover from the frequent bricks.
And the LG Flash Tool 2014 always needed several attempts to get the job done. The latest official recovery tool from LG works in D/L Mode, but will always download the rom image anew.

How to bring your phone back to life with fastboot

*im not developer, neither noob i just like to share what I know*
Maybe this is a noob guide, but i did my best to share something helpful
before you go deeper, be sure to check your phone able to get into fastboot mode. If you cant, use REAL unbrick method instead
If your phone soft or hard bricked, bootloop, stuck on logo etc you know you are f***ed unless you know what should to do.
Some time ago bootlooped my phone, but i cant go to recovery, cant ADB because I forgot to enable USB debugging, my computer wont recognize my phone poperly because my phone mad at me, and my phone flickering like hell *party hard*. Maybe this is a brick not bootloop but whatever
Good friend of mine tell me what should to do
What you need:
Working PC with minimal ADB and fastboot installed //see the thread here, your phone's USB and ADB driver installed //download here if you dont have it
Working USB DATA cable
Custom recovery everything will do, as long as its compatible with your current android version. Rename the img to recovery.img
ROM you prefer everything will do, as long as its compatible with your current android version. Move to your SD Card
The power of will
Step:
1. Make sure your phone is turned off
2. Boot into fastboot mode, you will see some chinese message
3. Plug your phone to to your PC
4. Check if your PC at least know that you are pluged in your phone (check via device manager by 'plug and un-plug' your phone and check for 'appear and disappear' device , mine listed as it is was a modem.)
5. Move the recovery.img inside minimal adb and recovery folder root usually under c:/programfiles directory
6. Run the minimal adb and fastboot, check your device by using /adb devices/ command without backslash
7. If your device is not listed, dont worry. We still able to use the fastboot
8. Boot your phone into recovery mode by using /fastboot boot recovery.img/ command without backslash
9. Wait for few secs, and your phone should touched down to recovery mode.
10. Do wipe (data, dalvik, cache, system, internal)
11. Flash your prefered ROM
12. ..........???
13. Profit
Troubleshooting:
If your PC unable to recognize your phone completely, try using another usb cable, usb ports, uninstall-reinstall, plug-unplug, and make sure your phone in fastboot mode before you plug your phone to the PC.
Feel free to critics, I hope this helped you :fingers-crossed:
Thank you for all who helped me making this post.
McBubu_1337 said:
*im not developer, neither noob i just like to share what I know*
Maybe this is a noob guide, but i did my best to share something helpful
before you go deeper, be sure to check your phone able to get into fastboot mode. If you cant, use REAL unbrick method instead
If your phone soft or hard bricked, bootloop, stuck on logo etc you know you are f***ed unless you know what should to do.
Some time ago bootlooped my phone, but i cant go to recovery, cant ADB because I forgot to enable USB debugging, my computer wont recognize my phone poperly because my phone mad at me, and my phone flickering like hell *party hard*. Maybe this is a brick not bootloop but whatever
Good friend of mine tell me what should to do
What you need:
Working PC with minimal ADB and fastboot installed //see the thread here, your phone's USB and ADB driver installed //download here if you dont have it
Working USB DATA cable
Custom recovery everything will do, as long as its compatible with your current android version. Rename the img to recovery.img
ROM you prefer everything will do, as long as its compatible with your current android version. Move to your SD Card
The power of will
Step:
1. Make sure your phone is turned off
2. Boot into fastboot mode, you will see some chinese message
3. Plug your phone to to your PC
4. Check if your PC at least know that you are pluged in your phone (check via device manager by 'plug and un-plug' your phone and check for 'appear and disappear' device , mine listed as it is was a modem.)
5. Move the recovery.img inside minimal adb and recovery folder root usually under c:/programfiles directory
6. Run the minimal adb and fastboot, check your device by using /adb devices/ command without backslash
7. If your device is not listed, dont worry. We still able to use the fastboot
8. Boot your phone into recovery mode by using /fastboot boot recovery.img/ command without backslash
9. Wait for few secs, and your phone should touched down to recovery mode.
10. Do wipe (data, dalvik, cache, system, internal)
11. Flash your prefered ROM
12. ..........???
13. Profit
Troubleshooting:
If your PC unable to recognize your phone completely[B/], try using another usb cable, usb ports, uninstall-reinstall, plug-unplug, and make sure your phone in fastboot mode before you plug your phone to the PC.
Feel free to critics, I hope this helped you :fingers-crossed:
Thank you for all who helped me making this post.
Click to expand...
Click to collapse
Good work bro
The Hard Gamer said:
Good work bro
Click to expand...
Click to collapse
Thanks, its noob post so i dont expect anything special
McBubu_1337 said:
Thanks, its noob post so i dont expect anything special
Click to expand...
Click to collapse
It is a good help to those who are new to getting bricked
It shows waiting for device
Tommen1998 said:
It shows waiting for device
Click to expand...
Click to collapse
You may need to check some things:
Your PC actually know that you have inserted your phone. It doesn't have to know it's a phone (so it can be detected as unknown device or something similar, mine is detected as a modem)
Your phone is indeed in fastboot mode, you can tell yours is in fastboot mode by a Chinese message at the bottom of the screen
Change your cable data, make sure it is a cable data, not a normal charging cable
let me know if you need some help
McBubu_1337 said:
You may need to check some things:
Your PC actually know that you have inserted your phone. It doesn't have to know it's a phone (so it can be detected as unknown device or something similar, mine is detected as a modem)
Your phone is indeed in fastboot mode, you can tell yours is in fastboot mode by a Chinese message at the bottom of the screen
Change your cable data, make sure it is a cable data, not a normal charging cable
let me know if you need some help
Click to expand...
Click to collapse
Hello. I Tried a lot, but my PC doesn't recognise my phone. The phone is in fastboot mode. I've tried by changing cables too
same issue
Tommen1998 said:
Hello. I Tried a lot, but my PC doesn't recognise my phone. The phone is in fastboot mode. I've tried by changing cables too
Click to expand...
Click to collapse
I am also getting the same issue tried different cables but not working. Anyone please help me
The same issue. I think it's about getting it recognized in Fastboot mode. It's recognized in Android but not in Fastboot. All new devices are installed including those you get in Diagnostic 9091 mode (Power+V+). What do I need for Fastboot mode?

[GUIDE] EASY Axon 7 UNIVERSAL UNBRICK / FACTORY RESTORE

WARNING, THIS GUIDE WILL WIPE ALL THE DATA IN YOUR DEVICE.
!!! Whatever you do, it is at your own risk !!!​
This procedure will unbrick any Axon 7, returning it to stock. It fixes any kind of brick as long as your hardware is not damaged. You can't damage your hardware using software so if you have a healthy unit, you can recover it from any flashing "accident".
1. GET THE SOFTWARE
You need a Windows PC, Windows 10 is highly recommended. Do this:
01. Install MiFlash in your PC. It includes the Qualcomm Snapdragon SoC drivers, nonetheless you can always install the latest drivers.
02. Download the EDL flashable stock firmware package for your model:
A2017 (China): B14_MIFAVOR5 Android: 7.1.1
A2017G (Europe): B10_NOUGAT Android: 7.1.1
A2017U (Americas): B35_NOUGAT Android: 7.1.1
03. Unzip the firmware ZIP file to a folder in your hard drive.
2. ENTER EDL MODE
Option A: USING THE REBOOT COMMAND
If you still have access to your system but not to recovery or fastboot, then you just need to install any terminal app, open it and at the app's command prompt enter:
Code:
reboot edl
. You device will reboot into EDL mode. Now you can safely plug your Device to your computer. In your computer right click in the Windows Start Menu icon and select Device Manager. Under Ports (COM & LPT) your device should appear as Qualcomm HS-USB QDLoader 9008 using a virtual COM port. If you can see it, then you can continue to the flash section, step 14. Otherwise, if you do not see anything or a DFU device, then you'll need to explore the next option.
Option B: USING THE BUTTON COMBO
04. Press the VolUp and VolDn buttons in your device and keep them pressed.
05. Now press the power button until the red LED flashes, it does it really quick. Then release the buttons, starting by the power button.
06. Plug the device to your computer.
In your computer right click in the Windows Start Menu icon and select Device Manager. Under Ports (COM & LPT) your device should appear as Qualcomm HS-USB QDLoader 9008 using a virtual COM port. If you can see it, then you can continue to the flash section, step 14. Otherwise, if you do not see anything or a DFU device, then you need an EDL cable.
OPTION C: USING THE EDL CABLE
So, you need to get a Qualcomm EDL cable. With it you can recover from any situation. I use this one, DrakenFX uses this other model. There are cables out there not working properly so do not try to save 4 or 5 bucks and get yours from a reliable source. Alternatively you can solder your own by following this guide. If you are in an emergency (or your patience threshold is very low) and have a thin wire around you, then you can follow this DIY hack video.
Do you already have the EDL cable? then follow these steps:
07. Connect your bricked Axon 7 to your PC using the EDL cable.
08. Press the EDL cable button and keep it pressed.
09. Press the Power button of your bricked unit and keep it pressed too.
10. Wait 20 seconds.
11. Release the power button.
12. Wait 10 seconds.
13. Release the button of the EDL cable.
Voilà, your device is now in EDL mode. The device manager in your PC, under the ports category, should detect it as Qualcomm HS-USB QDLoader 9008. Now you can proceed to the flash section. If this procedure doesn't work, then your unit could have a hardware problem. Your only hope is to dissemble it by following this last resort guide.
3. FLASH FIRMWARE
14. Open MiFlash in your computer.
15. Click Browse button and select the folder you created in step 03 with the stock firmware files.
16. Click Refresh button and your device will appear listed as virtual COM port.
17. Click Flash button and wait for a few minutes until it finishes. Note that the bottom options are not applicable.
18. Now you have a stock Axon 7. Your data partition will still have garbage data, so you should enter recovery by pressing VolUp while rebooting your device with the power button. Release VolUp only when you reach Recovery. Using Recovery do a Factory Reset of your device.
That was the last step. Hopefully now you have a fully functional stock Axon 7.
By the way, this guide can also be used to return to stock any working device for selling or service!!!!
Cheers!!!!
Nice! I just disassembled mine and did it that way the other day.
thank you.
i will save the files and guide for rainy day.
i have A2017 that i converted into A2017U; which file do i need to download?
@Oki
Thnx for this guide :good:
Find the latest A2017G N-B10 here
Harmtan2 said:
Nice! I just disassembled mine and did it that way the other day.
Click to expand...
Click to collapse
Glad to see you solved your issue.
mb0 said:
thank you.
i will save the files and guide for rainy day.
i have A2017 that i converted into A2017U; which file do i need to download?
Click to expand...
Click to collapse
I don't know what you mean about converting an A2017 into an A2017U. They are the same device except for the radio, that that's a hardware difference. You should always use the right modem firmware for your radio hardware so you should use the A2017 modem firmware. After unbricking your unit, you can unlock it again and flash any universal firmware the same way you did before. It is a long but safe process.
yes, i meant to say that i flashed U radio over my A2017
so China version is for me.
mb0 said:
yes, i meant to say that i flashed U radio over my A2017
so China version is for me.
Click to expand...
Click to collapse
If you flashed the A2017U radio in a A2017 hardware and worked fine for you, then you can use the A2017U B35 stock firmware.
What will be the bootloader status after following this guide? I need my phone with a locked bootloader.
My phone shows up as Handset Diagnostic Interface (DFU) (COM3) but it doesn't get detected on Miflash program......
aLexzkter said:
What will be the bootloader status after following this guide? I need my phone with a locked bootloader.
Click to expand...
Click to collapse
It should be locked. But in case you end up with an unlocked phone, then locking it is very easy. You only need to connect your phone, enter into fastboot mode, download the adb/fastboot tools and execute the command fastboot oem lock from your computer.
Oki said:
It should be locked. But in case you end up with an unlocked phone, then locking it is very easy. You only need to connect your phone, enter into fastboot mode, download the adb/fastboot tools and execute the command fastboot oem lock from your computer.
Click to expand...
Click to collapse
I can't get into EDL mode. I hold down volume buttons, then power. When the red led lights up, I unpress power, then the volume buttons, connect the USB cable and nothing happens on my phone (black display) red led still on. On my computer I see ZTE Handset Diagnostic Interface(DFU) (COM3).
Edit: I managed to get into EDL mode thanks to Axon 7 EDL Tool but I got a "File analysis: error" "not important files found" so I went back to MiFlash and also got an error about the files. Will update the post when I get it to work.
aLexzkter said:
I can't get into EDL mode. I hold down volume buttons, then power. When the red led lights up, I unpress power, then the volume buttons, connect the USB cable and nothing happens on my phone (black display) red led still on. On my computer I see ZTE Handset Diagnostic Interface(DFU) (COM3)
Click to expand...
Click to collapse
You can enter EDL mode from the system. Just install any terminal app, open it and enter the command reboot edl
Oki said:
You can enter EDL mode from the system. Just install any terminal app, open it and enter the command reboot edl
Click to expand...
Click to collapse
xD My phone was bricked. I thought this tutorial was mainly targeted for bricked devices.
Anyway, my phone is working now. The downloaded EDL zip was corrupt so it only had a few files inside.
@Oki
Edit: I have a working phone on Nougat B10. But I can't lock the bootloader because I don't have access to fastboot. My phone's variant is A2017G
aLexzkter said:
xD My phone was bricked. I thought this tutorial was mainly targeted for bricked devices.
Anyway, my phone is working now. The downloaded EDL zip was corrupt so it only had a few files inside.
@Oki
Edit: I have a working phone on Nougat B10. But I can't lock the bootloader because I don't have access to fastboot. My phone's variant is A2017G
Click to expand...
Click to collapse
Glad to see you solved your issue. I misunderstood your problem. I thought you had access to the system and not to recovery or fastboot. Anyway, this guide is for unbrick or return to stock. I'll investigate the relock problem. Usually clearing devinfo partition should be enough to relock any bootloader.
Oki said:
Glad to see you solved your issue. I misunderstood your problem. I thought you had access to the system and not to recovery or fastboot. Anyway, this guide is for unbrick or return to stock. I'll investigate the relock problem. Usually clearing devinfo partition should be enough to relock any bootloader.
Click to expand...
Click to collapse
In order to get access to fastboot I had to use the tool Axon7Toolkit, select "unlock bootloader" option, make sure you have an old version of MiFlash installed (20161212) and then you can select "lock bootloader" on Axon7Toolkit.
Thanks for everything.
aLexzkter said:
In order to get access to fastboot I had to use the tool Axon7Toolkit, select "unlock bootloader" option, make sure you have an old version of MiFlash installed (20161212) and then you can select "lock bootloader" on Axon7Toolkit.
Thanks for everything.
Click to expand...
Click to collapse
Well, I am considering to link the older Marshmallow ROMs since the Nougat ROMs have some issues with fastboot. Anyway. It is going to take some time to test the alternatives. Thanks for letting us know!
Some of the most recent firmware for Axon 7 (@NFound's B12 bootstack, I think) doesn't support the EDL button combo. But if you have TWRP installed, you can boot to recovery, then reboot to EDL from there.
I kept getting the device registering in device manager in DFU mode. But I noticed that it briefly registers as QUSB_BULK before reverting to DFU. So I installed zadig winUSB driver and now it registers as QUSB_BULK when I turn on the device pressing all 3 buttons.
How can I proceed now?
Hi there
Thanks for this guide. I have a 2017U, so I got A2017U_B35_NOUGAT_FULL_EDL.zip file. After unzipping and connecting the phone to the computer it gets properly recognized and i can start the process from the MiFlash program. After reaching somewhere between 30-40% of the flashing process, it goes suddenly to 100% and it says that is finished. When I reboot the phone, it appears as if I was still under an unlocked bootloader (warning message + TUX penguin image) and the phone starts but during the initial setup process, i chose to start as a new phone but it says that "This device was reset. To continue, sign in with a Google Account that was previously synced on this device" and obviously this is not what I am interested for.
How can I get rid of this message and get a full clean install, with bootloader relocked and all that??
Thank you for any help you can provide!
Flogisto said:
Hi there
Thanks for this guide. I have a 2017U, so I got A2017U_B35_NOUGAT_FULL_EDL.zip file. After unzipping and connecting the phone to the computer it gets properly recognized and i can start the process from the MiFlash program. After reaching somewhere between 30-40% of the flashing process, it goes suddenly to 100% and it says that is finished. When I reboot the phone, it appears as if I was still under an unlocked bootloader (warning message + TUX penguin image) and the phone starts but during the initial setup process, i chose to start as a new phone but it says that "This device was reset. To continue, sign in with a Google Account that was previously synced on this device" and obviously this is not what I am interested for.
How can I get rid of this message and get a full clean install, with bootloader relocked and all that??
Thank you for any help you can provide!
Click to expand...
Click to collapse
There ate several ways to remove that. One involves TWRP 3.2.1-7 and the other Axon 7 EDL tool, if you dont have TWRP then use the second . Jusy go to the unlock menu and apply the google unlock.
A third way would be to setup the phone with your old google account and do afactory reset from within Android, not from the bootloader. That would remove also the owner safety.
Thank you so much for your guide and software bundle.
I even had to make a EDL cable to restore my device.
After flashing, I do not see vendor as a partition but looks like it is a folder. Is it OK for future ROMs ?

bricked lg k8 (lg-k350n) - is there a way to get to fastboot to flash anything?

I was trying to flash lg-k350n with LineageOs and make a whole bunch of idiotic deeds, so currently I'm felling like dying is the best option for me.
1. I've used this tutorial: .getdroidtips.com/install-custom-rom-using-twrp-recovery. It clearly says that this ROM is for Android 8.0 Oreo, while mine is Android 6.0 Marshmallow. Nevertheless I've downloaded ROM lineage-15.0-20170913-Unofficial-MT6735-64-bit.zip. For some reason TWRP mentioned here getdroidtips.com/lineage-os-15-lg-k8-8-0-oreo/ did not wok for me but I've googled a bit and found something called TWRP-recovery-for-LG-K8.img which worked (not by fastboot flash TWRP-recovery-for-LG-K8.img since this TWRP appeared to be to big but simply by fastboot boot TWRP-recovery-for-LG-K8.img).
So I just did:i
turn on debugger
turn off oem lock
adb boot bootloader
fastboot boot TWRP-recovery-for-LG-K8.img
Feeling happy that TWRP loaded nicely I had not done any backjup and just wiped system as suggested here: lineageos.org/devices/h990/install. Then I've tried to installl the Android 8..0. ROM with obviously did not work. And I've got left with a TWRP working and then I've put the last needle in my coffin - I've rebooted hoping that some hard reset or recovery will fix things for me.
So now I have a phone which I'm able to put to recovery, but it does not recover anything. The phone just go dead after such a recovery.
I cannot put it into fastboot mode, if I could, I would just run 'fastboot boot TWRP-recovery-for-LG-K8.img' and at least had a chance to google a bit for maybe a vanilla ROM or anything working, which I could've later installer.
I've seen that there is a way to put the phone into download mode when it will download stuff from S/W "LG Bridge", bu I don't have Windows and haven't yet tried in virtualbox.
Is there any way to unbrick the device? Please help an idiot!
Sorry, you have to find a Windows box I'm afraid, LG is only offering Windows software for flashing. But chances are quite good that you are able to revive the telephone that way. I have bricked my phone as well but was able to unbrick it this way:
Go to www.lg.com, choose your language, select download, software and firmware.
Select smartphone, Android smartphones, K-series and your model number. This is only to come to the download site of LG Bridge, I guess it's not really important to choose the precise model!
Download LG Bridge, install and start it.
Let it update itself and the USB drivers and keep the software running.
Switch off the phone, press Volume up and keep holding that button.
Connect the phone with via USB with the PC while still pressing Volume Up. The phone should be recognized by the PC (install USB driver) and by LG Bridge (watch the status line to the left, it should show the phone type and USB)
The phone should automatically switch on and show a download screen (yippee!)
Select the second tab "software update" and then click on "correct update error" in the lower right. It should automatically download the correct firmware from the internet, so this is rather fool proof!
Click through it and this should start the flashing process, at the end the phone will automatically reboot, ask for the PIN, etc.
Unbricked!!!
Above instruction worked for me on a completely demolished phone. Lineage OS, changed FS, root attempted, I almost though that's it, but no, it recovered, thumbs up.
I haven't tried in Virtual Box, so I cannot tell if this is working. But you've got nothing to loose, right, so why not try it?
xor512 said:
I was trying to flash lg-k350n with LineageOs and make a whole bunch of idiotic deeds, so currently I'm felling like dying is the best option for me.
1. I've used this tutorial: .getdroidtips.com/install-custom-rom-using-twrp-recovery. It clearly says that this ROM is for Android 8.0 Oreo, while mine is Android 6.0 Marshmallow. Nevertheless I've downloaded ROM lineage-15.0-20170913-Unofficial-MT6735-64-bit.zip. For some reason TWRP mentioned here getdroidtips.com/lineage-os-15-lg-k8-8-0-oreo/ did not wok for me but I've googled a bit and found something called TWRP-recovery-for-LG-K8.img which worked (not by fastboot flash TWRP-recovery-for-LG-K8.img since this TWRP appeared to be to big but simply by fastboot boot TWRP-recovery-for-LG-K8.img).
So I just did:i
turn on debugger
turn off oem lock
adb boot bootloader
fastboot boot TWRP-recovery-for-LG-K8.img
Feeling happy that TWRP loaded nicely I had not done any backjup and just wiped system as suggested here: lineageos.org/devices/h990/install. Then I've tried to installl the Android 8..0. ROM with obviously did not work. And I've got left with a TWRP working and then I've put the last needle in my coffin - I've rebooted hoping that some hard reset or recovery will fix things for me.
So now I have a phone which I'm able to put to recovery, but it does not recover anything. The phone just go dead after such a recovery.
I cannot put it into fastboot mode, if I could, I would just run 'fastboot boot TWRP-recovery-for-LG-K8.img' and at least had a chance to google a bit for maybe a vanilla ROM or anything working, which I could've later installer.
I've seen that there is a way to put the phone into download mode when it will download stuff from S/W "LG Bridge", bu I don't have Windows and haven't yet tried in virtualbox.
Is there any way to unbrick the device? Please help an idiot!
Click to expand...
Click to collapse
same here, we are two now.
Don Pedro! said:
Sorry, you have to find a Windows box I'm afraid, LG is only offering Windows software for flashing. But chances are quite good that you are able to revive the telephone that way. I have bricked my phone as well but was able to unbrick it this way:
Go to www.lg.com, choose your language, select download, software and firmware.
Select smartphone, Android smartphones, K-series and your model number. This is only to come to the download site of LG Bridge, I guess it's not really important to choose the precise model!
Download LG Bridge, install and start it.
Let it update itself and the USB drivers and keep the software running.
Switch off the phone, press Volume up and keep holding that button.
Connect the phone with via USB with the PC while still pressing Volume Up. The phone should be recognized by the PC (install USB driver) and by LG Bridge (watch the status line to the left, it should show the phone type and USB)
The phone should automatically switch on and show a download screen (yippee!)
Select the second tab "software update" and then click on "correct update error" in the lower right. It should automatically download the correct firmware from the internet, so this is rather fool proof!
Click through it and this should start the flashing process, at the end the phone will automatically reboot, ask for the PIN, etc.
Unbricked!!!
Above instruction worked for me on a completely demolished phone. Lineage OS, changed FS, root attempted, I almost though that's it, but no, it recovered, thumbs up.
I haven't tried in Virtual Box, so I cannot tell if this is working. But you've got nothing to loose, right, so why not try it?
Click to expand...
Click to collapse
your phone cannot be trusted loooooop, cannot goto download and fastboot mode...
If you don't manage to enter download mode you have probably indeed bricked the phone. If what I've written above doesn't work for you I know of no other way to resurrect it, sorry.
This is because you cannot burn TWRP to the Flash plus there's no tool available to bootstrap an LG phone with a completely naked or corrupted Flash. There must be something like that, because a freshly manufactured phone has by definition a naked Flash.
With Samsung phones you have Odin and with it it is possible to burn a software to a completely dead phone. So it is almost impossible to hard brick it. With LG unfortunately it is different. Plus this phone is somehow crippled, it has only a very, very limited amount of Flash. So I would recommend to not care for this phone anymore, it's not worth it, and instead get a current one with a decent amount of memory.

Question Huge Problem

Well, ok..I have a huge problem.
I was in developer mode and it said i could switch my rom so i installed it and now my phone says "Your device is corrupt. It is not trusted and will not boot".
Any suggestions on how I can fix this?
Wow that can't be good. I'm new to the oneplus stuff, normally I would say boot into recovery and reflash to stock but since we do not have roms yet I have a feeling your going to have to take it back to tmobile or oneplus and exchange it.
He should still be able to recover it with a factory restore via the stock recovery. As far as I know (and I'm not an expert) a bad ROM flash doesn't touch the recovery partition.
from https://www.devicesfaq.com/en/reset/oneplus-nord-n200-5g
Restore with hard reset or Recovery mode OnePlus Nord N200 5G​Restore with hard reset or Recovery mode your OnePlus Nord N200 5G can solve problems that have not been solved with a normal factory reset.
1- First turn off your OnePlus Nord N200 5G completely. If you can not unlock the screen, press and hold the power button for about 20 seconds and the phone will turn off.
2- Keep holding on volume down and power keys together for a few seconds in your OnePlus Nord N200 5G. In some devices according to the Android version the combination can be the power key and the volume key up.
3- When the OnePlus logo is displayed, release the buttons.
4- Move through the menu with the volume up and volume down keys until you reach the “Recovery Mode” option and press the power button to access.
If the device menu appears in Chinese characters, click here to see how to reset a mobile in Chinese
5- Use the volume up and volume down keys to select the “wipe cache partition” option and press the Power button to activate the option and clear the mobile cache.
6- After a few seconds you will return to the previous screen, with the volume buttons go to the option “wipe data / factory reset” and press the power button to enter. A screen with many NOes and a YES will appear, with the volume keys again go to the YES and press with the power key.
7- After finishing again with the volume keys, click on “reboot system now” and press the power key of your OnePlus Nord N200 5G, the device will reboot and take several minutes to start while restoring the device to its factory state and optimizing the applications pre-installed in the system Android 11, OxygenOS 11.
Click to expand...
Click to collapse
edale1 said:
He should still be able to recover it with a factory restore via the stock recovery. As far as I know (and I'm not an expert) a bad ROM flash doesn't touch the recovery partition.
from https://www.devicesfaq.com/en/reset/oneplus-nord-n200-5g
Click to expand...
Click to collapse
I can't even get into recovery. I can get into download mode but theres no way for me to restore it from that...
literally recovery mode is gone also. it's so weird, i did this from my phone's settings, it shouldn't have done this.
fogles2021 said:
I can't even get into recovery. I can get into download mode but theres no way for me to restore it from that...
literally recovery mode is gone also. it's so weird, i did this from my phone's settings, it shouldn't have done this.
Click to expand...
Click to collapse
phone off -> volume down + power (hold both in until phone's booted)
that doesn't work to get into recovery mode?
How about
volume up + volume down + power
to get into fastboot mode?
Can you connect via USB to run ADB commands?
edale1 said:
phone off -> volume down + power (hold both in until phone's booted)
that doesn't work to get into recovery mode?
How about
volume up + volume down + power
to get into fastboot mode?
Can you connect via USB to run ADB commands?
Click to expand...
Click to collapse
I can only boot into fastboot, recovery just boots back to "your device is corrupt'.
I can connect usb but i can't find drivers for the phone, its connect as QUSB.
Get the Google USB Driver | Android Studio | Android Developers
The Google USB Driver is required to perform adb debugging on Windows with Google devices.
developer.android.com
There's the USB drivers.
Selecting recovery from within fastboot mode brings up the corrupt message as well? Very odd.
I'm seeing 2 options then. Take the phone back to the store you got it at to see if they can fix/replace it; or wait for the ROM to be released.
edale1 said:
Get the Google USB Driver | Android Studio | Android Developers
The Google USB Driver is required to perform adb debugging on Windows with Google devices.
developer.android.com
There's the USB drivers.
Selecting recovery from within fastboot mode brings up the corrupt message as well? Very odd.
I'm seeing 2 options then. Take the phone back to the store you got it at to see if they can fix/replace it; or wait for the ROM to be released.
Click to expand...
Click to collapse
I've installed these and it still comes up as qusb bulk.
Yeah, selecting recovery from fastboot goes to corrupt message, too.
Just going to make a aservice request.
There was another report of this on the OnePlus forums a while ago, too, if I'm inferring what happened correctly: https://forums.oneplus.com/threads/...-the-oneplus-nord-n200.1460001/#post-23393026
The only real recourse right now is to submit a ticket as you've done and wait until you can send your device back and they send you a new one.
Once OnePlus releases a full stock ROM image, if they ever do, it will be possible to recover a bootloader-unlocked device from this state. But even then that won't work if you weren't bootloader unlocked beforezs the update.
---
While you've still got the device, though, could you try something for me? Could you install the android platform tools, see if you can get fastboot working on your computer, and try the fastboot command "fastboot set-active a"?
The Nord N200 5G is a A/B partitioned device, which means it has two of each system partition, one labeled "a" and one labeled "b". The update process is *supposed to* install all updates into the partition that you aren't currently using, then instruct the system to switch to it so it can update seamlessly.
I have no idea what went wrong in your update process, but if it did an incomplete update then instructed the system to use the other partition (and now for some reason doesn't switch back) this could help. I kind of doubt it will, since in my attempts at flashing bootloaders, if I put anything fully invalid in boot partition 'b', the phone automatically switches back to 'a' and boots into "safe mode".
But if for some reason it isn't corrupted enough to trigger that, maybe switching back to the "a" partition set could fix it. Or if you're already on "a", you could try switching to "b".
daboross said:
There was another report of this on the OnePlus forums a while ago, too, if I'm inferring what happened correctly: https://forums.oneplus.com/threads/...-the-oneplus-nord-n200.1460001/#post-23393026
The only real recourse right now is to submit a ticket as you've done and wait until you can send your device back and they send you a new one.
Once OnePlus releases a full stock ROM image, if they ever do, it will be possible to recover a bootloader-unlocked device from this state. But even then that won't work if you weren't bootloader unlocked beforezs the update.
---
While you've still got the device, though, could you try something for me? Could you install the android platform tools, see if you can get fastboot working on your computer, and try the fastboot command "fastboot set-active a"?
The Nord N200 5G is a A/B partitioned device, which means it has two of each system partition, one labeled "a" and one labeled "b". The update process is *supposed to* install all updates into the partition that you aren't currently using, then instruct the system to switch to it so it can update seamlessly.
I have no idea what went wrong in your update process, but if it did an incomplete update then instructed the system to use the other partition (and now for some reason doesn't switch back) this could help. I kind of doubt it will, since in my attempts at flashing bootloaders, if I put anything fully invalid in boot partition 'b', the phone automatically switches back to 'a' and boots into "safe mode".
But if for some reason it isn't corrupted enough to trigger that, maybe switching back to the "a" partition set could fix it. Or if you're already on "a", you could try switching to "b".
Click to expand...
Click to collapse
Can u give me a link to platform tools, also..my computer is detecting the phone as QUSB BULK:"
From one of my other threads:
------
USB DRIVERS
You may need to use the Google USB Driver from Android Studio to allow your PC to recognize your phone when it's in fastboot mode.
Download Android Studio & App Tools - Android Developers
Android Studio provides app builders with an integrated development environment (IDE) optimized for Android apps. Download Android Studio today.
developer.android.com
Android Studio won't install the USB Drivers by default, you'll need to install them through the SDK Manager (Android Studio -> Projects -> More Actions -> SDK Manager -> SDK Tools -> Google USB Driver checkbox -> Apply)
You'll need to manually install the drivers through the device manager while the phone is in fastboot mode and connected to the PC (right-click -> Update Drivers -> Browse Computer -> Let Me Pick -> Have Disk).
The drivers should be located at:
C:\Users\[username]\AppData\Local\Android\Sdk\extras\google\usb_driver\android_winusb.inf
You'll want the 'Android Bootloader Interface' driver.
Click to expand...
Click to collapse
------
Basically, you need to manually update the drivers through device manager.
edale1 said:
From one of my other threads:
------
------
Basically, you need to manually update the drivers through device manager.
Click to expand...
Click to collapse
I can't get it to work...
fogles2021 said:
I can't get it to work...
Click to expand...
Click to collapse
From the first update drivers dialog (your phone should be in fastboot mode):
"browse my computer for drivers"
"let me pick from a list of available drivers on my computer"
"have disk"
And the drivers should be at
Code:
C:\Users\[username]\AppData\Local\Android\Sdk\extras\google\usb_driver\android_winusb.inf
Once you select the .inf, you'll want to select this from the resultant list:
"Android Bootloader Interface"
fogles2021 said:
I can't get it to work...
Click to expand...
Click to collapse
Your phone is in EDL mode, also known as hard brick. It seems like the phone thinks both of your system partitions are empty or corrupt, as well as the bootloader is perhaps corrupt, due to which it is now gone to EDL mode as a last resort.
Typically, the only way to come out of it is to flash in EDL mode using MSMDownload Tool. Unfortunately for you, I don't see that Oneplus has released the MSMDownload Tool for the N200.
There are 4 things you can do at this stage.
1. If the phone is in return period, get it exchanged for another one.
2. Assuming the phone is under warranty, get it repaired under warranty
3. Wait for Oneplus to release the MSMDownload Tool for the N200. From past experience, Oneplus has eventually released it for every one of their phones. Once it is released, it is literally a 5 minute fix to get your phone to factory refreshed stage.
4. As a long shot, we can try to see if the bootloader is not corrupt, and if that is working, try to check if either of the 2 system partition is still intact, as @edale1 is suggesting above. Try the following
a. Press Volume Down+Power when phone is power off stage, and see if you can get the phone in fastboot mode.
b. Go to the folder when you have downloaded the Android SDK Toolkit. Alternately, search for the folder containing "fastboot.exe" on your hard drive. Open a command prompt in that folder containing fastboot.exe.
c. Run "fastboot devices" in the command prompt.
d. If you get a response of "no devices", then that means either phone is not in fastboot mode ( Go to Step a and repeat a,b,c until it is in fastboot mode) or bootloader is corrupt (nothing can be done other than Steps 1, 2 or 3 I have outlined above)
e. If you get a response of "XYZ fastboot" where XYZ is a random string/number, then bootloader is not corrupt. Proceed to Step f.
f. Type "fastboot getvar all" in the command prompt.
Wait for a lot of text to finish scrolling and look for the (bootloader) current-slot text
This should actually be toward the bottom without the need to scroll up.
The letter after this text will be the currently active partition slot for your device, either 'a' or 'b'
g. Follow @edale1's instruction above to change active partition to the *opposite* of whatever currently active partition e.g. if it says 'a' as the active partition in Step f above, then type in "fastboot --set-active=b" in command prompt, and vice-versa i.e. if it says 'b' as the active partition in Step f above, then type in "fastboot --set-active=a" in command prompt
h. If you get success in Step g, type "fastboot reboot" in command prompt, and keep your fingers crossed that it boots up normally. If not, that means both system partitions are corrupt. Follow Steps 1, 2 or 3 above.
Good luck!
fogles2021 said:
Well, ok..I have a huge problem.
I was in developer mode and it said i could switch my rom so i installed it and now my phone says "Your device is corrupt. It is not trusted and will not boot".
Any suggestions on how I can fix this?
Click to expand...
Click to collapse
No stock rom on oneplus/tmobile website
Im having a device corrupt error and cannot access phone anymore. Im trying to find the stock rom to flash with MSM tool but cantyfind it anywhere. You'd think oneplus would have it up on their website already. Anyone?
forum.xda-developers.com
Had the same problem, had to do a warranty replacement
I followed your mini guide but it says "Slotchange is not allowed in lock state"
Anyways to unlock it using fastboot ?
Ethanvio said:
I followed your mini guide but it says "Slotchange is not allowed in lock state"
Anyways to unlock it using fastboot ?
Click to expand...
Click to collapse
If you didn't enable OEM unlocking in developer options before you bricked your phone, you can't unlock those fastboot commands.

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