Bootloader : - Android Q&A, Help & Troubleshooting

What is a Bootloader? I have flashed TWRP via Odin on my Samsung note 4 SM - N910G . Does that mean My bootloader is unlocked? ..Thank you !
Sent from my SM-N910G using Tapatalk

Mvk3772 said:
What is a Bootloader? I have flashed TWRP via Odin on my Samsung note 4 SM - N910G . Does that mean My bootloader is unlocked? ..Thank you !
Click to expand...
Click to collapse
Bootloader is a set of instructions to boot your android operating system and kernel. Bootloader runs first when android is booting.
Flashing custom recovery needs unlocked bootloader. May be your bootloader is unlocked. Because Samsung have unlocked bootloader.

Ashwinrg said:
Bootloader is a set of instructions to boot your android operating system and kernel. Bootloader runs first when android is booting.
Flashing custom recovery needs unlocked bootloader. May be your bootloader is unlocked. Because Samsung have unlocked bootloader.
Click to expand...
Click to collapse
Thank you. Just another question regarding TWRP and Booting to recovery mode! .. According to YouTube search - I've learnt to flash TWRP on SM N910G through Odin - as you might already know Which involves going into Downloading Mode and flashing TWRP and later removing the Battery and Then rebooting to Recovery mode ..only then TWRP shows up ( I'm thinking removing battery and rebooting is only specific for N910G , I'm only thinking) .... but here is the problem (finally ?) ... When this is Done. .. when I again Reboot to Recovery Mode --- TWRP doesn't show Up .!! ..Stock Recovery shows up!.. I don't know Why? Why not TWRP? ?.... ( Again I'm Very New To Flashing Stuff ?) Thank you again.
Sent from my SM-N910G using Tapatalk

Mvk3772 said:
Thank you. Just another question regarding TWRP and Booting to recovery mode! .. According to YouTube search - I've learnt to flash TWRP on SM N910G through Odin - as you might already know Which involves going into Downloading Mode and flashing TWRP and later removing the Battery and Then rebooting to Recovery mode ..only then TWRP shows up ( I'm thinking removing battery and rebooting is only specific for N910G , I'm only thinking) .... but here is the problem (finally ?) ... When this is Done. .. when I again Reboot to Recovery Mode --- TWRP doesn't show Up .!! ..Stock Recovery shows up!.. I don't know Why? Why not TWRP? ?.... ( Again I'm Very New To Flashing Stuff ?) Thank you again.
Click to expand...
Click to collapse
It seems you not flashed TWRP properly.

Ashwinrg said:
It seems you not flashed TWRP properly.
Click to expand...
Click to collapse
But I've done a Full system backup with TWRP at the first time.. then later when I switch off my phone and reboot to recovery mode... Stock Recovery shows up . In order to again access TWRP . I have to again flash it through Odin and repeat the same process as above... ... ??
Sent from my SM-N910G using Tapatalk

Problem Solved . Never Mind
Sent from my SM-N910G using Tapatalk

Related

Need tester for CWM

I am trying to build a CWM for your Grand 2 but i need a tester as i don't own the device
Soureen said:
I am trying to build a CWM for your Grand 2 but i need a tester as i don't own the device
Click to expand...
Click to collapse
we tried almost 3 cwms ... the problem is that it doesnt work because the bootloader is locked with qualcomm secure boot ... it has to be unlocked first
already have cwm recovery. . but the boot loader is locked. . so need some one unlock it
Rakesh251 said:
already have cwm recovery. . but the boot loader is locked. . so need some one unlock it
Click to expand...
Click to collapse
rutvikrvr said:
we tried almost 3 cwms ... the problem is that it doesnt work because the bootloader is locked with qualcomm secure boot ... it has to be unlocked first
Click to expand...
Click to collapse
Ok thanks !
any link to the available cwm
Wait a min. What do u mean by saying that cwm does nt work??
I was able to boot into stock android recovery in grand 2 using 3 button combo . ( vol up + home + power ).
Make sure you are flashing cwm recovery converted into .tar format using odin .....
I dont own grand 2 but I check these in my relatives device.
Just check carefully, I dont think bootloader has got something to be done with flashing recovery.
Yep u needcto unlock bootloader to flash roms but not while flashing rec via odin.
Akhilendra Gadde said:
Wait a min. What do u mean by saying that cwm does nt work??
I was able to boot into stock android recovery in grand 2 using 3 button combo . ( vol up + home + power ).
Make sure you are flashing cwm recovery converted into .tar format using odin .....
I dont own grand 2 but I check these in my relatives device.
Just check carefully, I dont think bootloader has got something to be done with flashing recovery.
Yep u needcto unlock bootloader to flash roms but not while flashing rec via odin.
Click to expand...
Click to collapse
actually the bootloader is secured with qualcomm secureboot ...so we arent able to flash cwm ...and btw we tried the .tar file through cwm
Soureen said:
I am trying to build a CWM for your Grand 2 but i need a tester as i don't own the device
Click to expand...
Click to collapse
i can test it if it does not hard break the phone
Try at your own risk bro
sent by my Grand 2

[RECOVERY][UNOFFICIAL] Clockworkmod Recovery for the Samsung Galaxy Grand 2

Ok folks, Here is Clockworkmod Recovery with Swipe enabled for your Grand 2.
Note: No one but yourself is responsible for what you do to your device.
People to Thank
koush - for his awesome recovery.
Shabbypenguin - For firguring out it was missing the dtb.
bailboxer - for providing needed dumps and contacting me.
Known Issues
doesnt boot due to qcom boot security.
Post and let me know!!!
How to install with Odin
(USB) Disconnect your phone from your computer
Start Odin3-vX.X.exe
Click the PDA button, and select cwm-grand2.tar
Put your phone in download mode (turn off phone, then hold VolDown+Home+Power to boot - if it asks you to press a button to continue, press the listed button, or run adb reboot download command)
(USB) Connect the phone to your computer
Make sure Repartition is NOT checked
Click the Start button
Wait for Android to boot
Done (if it took you more than 30 seconds, you goofed)
NOTE: Sometimes the device does *not* boot into recovery mode. Just do the entire procedure again if this happens. If it still will not install, make sure that in Odin "Auto Reboot" is not checked. Then after flashing, pull the battery, and boot with VolUp+Home+Power button to boot into recovery manually. This will start the install process.
The Goods
ms013g-cwmr.tar
stockrecovery.tar
XDA:DevDB Information
Clockworkmod Recovery Samsung Galaxy Grand 2 SM-G7102, Tool/Utility for the Samsung Galaxy Grand 2
Contributors
PlayfulGod
Version Information
Status: Testing
Created 2014-04-28
Last Updated 2014-07-04
cwm not working
it doesn't boot.. not working
pearlborpuzari said:
it doesn't boot.. not working
Click to expand...
Click to collapse
what does it do?
tar removed for now so no one else installs it.
PlayfulGod said:
what does it do?
tar removed for now so no one else installs it.
Click to expand...
Click to collapse
The recovery doesn't boot.. It gets redirected to download mode.
Probably because of secured bootloader..
Safestrap might work!!..
so before we flash we do to remove cwm recovery from the tar file? or we flash this tar? .. and also where is the stock recovery ? if this cwm not work we can get back to the stock recovery.
reply very soon
Rakesh251 said:
so before we flash we do to remove cwm recovery from the tar file? or we flash this tar? .. and also where is the stock recovery ? if this cwm not work we can get back to the stock recovery.
reply very soon
Click to expand...
Click to collapse
if u are flashing it using Odin u must use .tar!!!
as i have mentioned above the cwm recovery doesn't boot..
if u have already lost the stock recovery here is the link to download
To install follow the same method suggested by PlayfulGod
but replace cwm-grand2.tar with the file downloaded
any one succeeded to boot
Rakesh251 said:
any one succeeded to boot
Click to expand...
Click to collapse
Just was informed that this device appears to be locked down with knox. Knox is Samsungs latest locking method. Some devices with knox dont restrict booting modded boot images (boot/recovery) and some are locked down tighter than grannies panties. The Grand 2 seems to be locked down.
Thanks
Thanks for your efforts..
hope some day we could break Knox security layer :good:
PlayfulGod said:
Just was informed that this device appears to be locked down with knox. Knox is Samsungs latest locking method. Some devices with knox dont restrict booting modded boot images (boot/recovery) and some are locked down tighter than grannies panties. The Grand 2 seems to be locked down.
Click to expand...
Click to collapse
There is no knox security in system and in bootloader like in note2 , S4 and S5 devices .Those devices has knox trip indicator in download mode luckily our device don't has that indicator .Also our device root is supported by @Chainfire .It's just the qualcomm secure boot that restrict any custom recovery and kernel to work in our device .The safestrap recovery can work only if some recognised dev can help us out .
Sent from my SM-G7102 using Tapatalk 2
balliboxer said:
There is no knox security in system and in bootloader like in note2 , S4 and S5 devices .Those devices has knox trip indicator in download mode luckily our device don't has that indicator .Also our device root is supported by @Chainfire .It's just the qualcomm secure boot that restrict any custom recovery and kernel to work in our device .The safestrap recovery can work only if some recognised dev can help us out .
Sent from my SM-G7102 using Tapatalk 2
Click to expand...
Click to collapse
I'll investigate more.
PlayfulGod said:
I'll investigate more.
Click to expand...
Click to collapse
Please do investigate we r all here to test ur upcoming builds .
Sent from my SM-G7102 using Tapatalk 2
Any luck yet?
Hope that one day we will get usb otg cable support for our phone...
sent by my Grand 2
sorry for asking the question in wrong place ...
Don't we have any MegaWipe Script for Grand 2 ?
any news ?
Sent from my SM-G7102 using Tapatalk
Yessss....hope some1 find the way to enable usb otg
Sent from my SM-G7102 using XDA Free mobile app
Awesome
can i use this for Galaxy Grand Prime?
Need stock recovery for 4.4.2 running grand 2. Plz Help...
SM-G7102..... ODIN flashable file

about my moto e

hiiii alll..
Recently my moto E 1st generation mobile android os has crashed. I have given in mobile repair shop and they are telling that its not accepting software. always showing moto symbol itself when it restarted. could anyone tell me how to recover the os or reinstall
note: my mobile is not rooted.
even can i install android version.... please respond
Yes definately you can install android
Just root your phone and install custom recovey like twrp and then install any custom rom which can be downloaded from xda
It's easy
I repaired a non-rooted moto e with the same problem. you have to check your phone goes into fastboot mode (switch off the phone, press volume down + power button for 10 secs). Then you have to unlock the bootloader, install twrp and flash whichever os u want . For unlocking bootloader and installing twrp there are so many threads in xda
vinithv said:
I repaired a non-rooted moto e with the same problem. you have to check your phone goes into fastboot mode (switch off the phone, press volume down + power button for 10 secs). Then you have to unlock the bootloader, install twrp and flash whichever os u want . For unlocking bootloader and installing twrp there are so many threads in xda
Click to expand...
Click to collapse
brother i can boot the image (recovery file) but it boots in a endless showing MOTO logo and nothing happens , unable to flash anything can you help ??
Harry_00s.HS said:
brother i can boot the image (recovery file) but it boots in a endless showing MOTO logo and nothing happens , unable to flash anything can you help ??
Click to expand...
Click to collapse
Try flashing stock rom from this thread http://forum.xda-developers.com/moto-e/development/rom-stock-motorola-lollipop-rom-t3167111
vinithv said:
Try flashing stock rom from this thread http://forum.xda-developers.com/moto-e/development/rom-stock-motorola-lollipop-rom-t3167111
Click to expand...
Click to collapse
how can i flash when i am not able to boot to twrp .... i get lot's of errors in stock recovery , also i am not able to flash stock rom via cmd
Harry_00s.HS said:
how can i flash when i am not able to boot to twrp .... i get lot's of errors in stock recovery , also i am not able to flash stock rom via cmd
Click to expand...
Click to collapse
have you unlocked your bootloader ?was it successful ?
vinithv said:
have you unlocked your bootloader ?was it successful ?
Click to expand...
Click to collapse
Bootloader was unlocked i guess , yes bootloader is unlocked cuz last time when i saw my phone turning on it said that bootloader unlock warning means the Bootloader is unlocked

One Plus X soft (?) bricked

Hi guys,
Before you say again a topic on a non bricked One Plus X, I would like to let you know that I've checked and try almost all of the tutorial I've seen on xda and one plus forum.
I was on CM14.1 with this ROM : https://forum.xda-developers.com/oneplus-x/orig-development/rom-cyanogenmod-14-onyx-t3452150
Unfortunately, I made the 25-12-2016 update and it totally broke up the phone..
I download the OnePlus X OxygenOS 3.1.4 on the One Plus website. So I flash it on the stock recovery, it tells me "Install success" then I reboot and it stays on the bootlogo.
For information, I can't access the oem unlock menu if needed, but when I ask the oem device info it says unlocked. The phone is detected by the computer sometimes with unknown device and sometimes correctly with the qualcomm drivers..
I have a back up made from TWRP, I can access the device by the fastboot mode, it seems that all the operations written here worked but it doesn't install or even boot on TWRP..
Thanks for your help guys.
Are you using latest TWRP from website think version 3.0.3?
Exodusche said:
Are you using latest TWRP from website think version 3.0.3?
Click to expand...
Click to collapse
I'm not even using TWRP, since I can't boot on it.. But I tried to flash the twrp-3.0.2-2 from blue spark v41, after the installation via Flashboot, it doesn't boot up on the recovery..
So after flashing TWRP you use fastboot boot recovery.img and nothing happens?
Exodusche said:
So after flashing TWRP you use fastboot boot recovery.img and nothing happens?
Click to expand...
Click to collapse
Exactly, the phone is stuck on the one plus logo..
defqon_1 said:
Exactly, the phone is stuck on the one plus logo..
Click to expand...
Click to collapse
If you did not unlocked bootloader properly then also you might face the problem...
to unlock bootloader: https://forum.xda-developers.com/oneplus-x/general/discussion-how-to-root-oneplus-x-t3242830
make sure you follow all the step. (If you didn't followed these steps then lock bootloader {fastboot oem lock} and unlock using this mathod, worked for me.)
Falsh this kernal after flashing rom and gapps, https://forum.xda-developers.com/oneplus-x/development/kernel-arsenic-kernel-r2-t3422020
Don't forget to hit :good:
Divyesh49 said:
If you did not unlocked bootloader properly then also you might face the problem...
to unlock bootloader: https://forum.xda-developers.com/oneplus-x/general/discussion-how-to-root-oneplus-x-t3242830
make sure you follow all the step. (If you didn't followed these steps then lock bootloader {fastboot oem lock} and unlock using this mathod, worked for me.)
Falsh this kernal after flashing rom and gapps, https://forum.xda-developers.com/oneplus-x/development/kernel-arsenic-kernel-r2-t3422020
Don't forget to hit :good:
Click to expand...
Click to collapse
Didn't work. I tried to lock and then unlock to be sure but not is stay in false for tempered AND unlocked.
So I don't have any idea on how make android back on my phone.
I just have access to Fastboot mode. No recovery, nothing else..
EDIT : phone is not starting anymore. I try to charge it hoping it just a low battery problem..
You should send it to RMA
Trimis de pe al meu Redmi 3S folosind Tapatalk
Finally, I resolved the problem I don't know how but for the moment I have stock recovery and stock rom ! :laugh:
I will wait for a stable rom for Nougat. Thanks for the help guys !
PS : how do I close or write resolved at the top of the subject ?
Help Pls
defqon_1 said:
Finally, I resolved the problem I don't know how but for the moment I have stock recovery and stock rom ! :laugh:
I will wait for a stable rom for Nougat. Thanks for the help guys !
PS : how do I close or write resolved at the top of the subject ?
Click to expand...
Click to collapse
I have the same problem, access to fastboot but no to recovery. How do you resolved it?
UBCM said:
I have the same problem, access to fastboot but no to recovery. How do you resolved it?
Click to expand...
Click to collapse
Start by seeing if you can fastboot flash stock recovery from any 2.X.X OOS. Then fastboot flash twrp 3.0.2. If your on new bootloader meaning latest ROMs or OOS3 then you need to boot into 3.0.2 and from there you can flash IMG of twrp 3.0.3. Make sure you boot right back into recovery after flashing any twrp or it won't stick. This worked for me when I lost my recovery twice but always remember at your own risk. Not responsible if you make your phone into a paper weight.
Fix It!
Exodusche said:
Start by seeing if you can fastboot flash stock recovery from any 2.X.X OOS. Then fastboot flash twrp 3.0.2. If your on new bootloader meaning latest ROMs or OOS3 then you need to boot into 3.0.2 and from there you can flash IMG of twrp 3.0.3. Make sure you boot right back into recovery after flashing any twrp or it won't stick. This worked for me when I lost my recovery twice but always remember at your own risk. Not responsible if you make your phone into a paper weight.
Click to expand...
Click to collapse
Done! finally i can reinstall stock rom and recovery with drivers by usb.
UBCM said:
I have the same problem, access to fastboot but no to recovery. How do you resolved it?
Click to expand...
Click to collapse
I have tried multiple tools that I find on XDA. I put all the zip files like bootloader update and rom on my sdcard. And by a great night, the OOS 3.1.4 finally booted up ! So I don't have a miracle solutions that can help you..
Done
defqon_1 said:
I have tried multiple tools that I find on XDA. I put all the zip files like bootloader update and rom on my sdcard. And by a great night, the OOS 3.1.4 finally booted up ! So I don't have a miracle solutions that can help you..
Click to expand...
Click to collapse
Don't worry i have restored my OPX 5 days ago. I used the method of this video: https://youtu.be/R4SVSovw4Jo and files from this thread: https://forum.xda-developers.com/oneplus-x/general/guide-mega-unbrick-guide-hard-bricked-t3272108 , if it can help someone.

Oneplus X stuck on boot logo after corrupt ROM install

I was flashing paranoid android 6.0.2 for my device. I downloaded the zip(from the official paranoid android website) and checked the md5 checksum, which did not match. However, like a total idiot, I flashed it nonetheless. On booting, the phone gets stuck on the boot logo. I tried booting into recovery(TWRP) and performing a factory reset to no avail. I redownloaded the flashable zip for Paranoid, successfully verified the md5 checksum and flashed it again, no avail. Restore a full backup from within TWRP, no avail. My phone still gets stuck on the bootlogo. I have looked all over every forum without any results. Please help me out? I would like to get it back to functional state and flash the rom again. As mentioned, I have access to my custom recovery and can connect to my device via fastboot. I am willing to give any other information you may need.
Thanks!
Shreyas
shreyasminocha said:
I was flashing paranoid android 6.0.2 for my device. I downloaded the zip(from the official paranoid android website) and checked the md5 checksum, which did not match. However, like a total idiot, I flashed it nonetheless. On booting, the phone gets stuck on the boot logo. I tried booting into recovery(TWRP) and performing a factory reset to no avail. I redownloaded the flashable zip for Paranoid, successfully verified the md5 checksum and flashed it again, no avail. Restore a full backup from within TWRP, no avail. My phone still gets stuck on the bootlogo. I have looked all over every forum without any results. Please help me out? I would like to get it back to functional state and flash the rom again. As mentioned, I have access to my custom recovery and can connect to my device via fastboot. I am willing to give any other information you may need.
Thanks!
Shreyas
Click to expand...
Click to collapse
What was your last rom? Did u upgrade ur bootloader?
You probably looking at mega unbrick guide
cva_kabil said:
What was your last rom? Did u upgrade ur bootloader?
Click to expand...
Click to collapse
I was running stock OxygenOS(>3.0.0) ROM.
shreyasminocha said:
I was running stock OxygenOS(>3.0.0) ROM.
Click to expand...
Click to collapse
Yeah thats d problem, PA roms are only compatible with old lollipop bootloader, u said u were in oos3 which means u hv updated to ur bootloader to marshmallow. Try clean flashing new bootloader supported roms. Before downloading check for its compatibility, all nougat roms r compatible.. U can try if u wish ))
cva_kabil said:
Yeah thats d problem, PA roms are only compatible with old lollipop bootloader, u said u were in oos3 which means u hv updated to ur bootloader to marshmallow. Try clean flashing new bootloader supported roms. Before downloading check for its compatibility, all nougat roms r compatible.. U can try if u wish ))
Click to expand...
Click to collapse
That said, should I follow a bricked guide before doing the above?
cva_kabil said:
Yeah thats d problem, PA roms are only compatible with old lollipop bootloader, u said u were in oos3 which means u hv updated to ur bootloader to marshmallow. Try clean flashing new bootloader supported roms. Before downloading check for its compatibility, all nougat roms r compatible.. U can try if u wish ))
Click to expand...
Click to collapse
Also, is there any way I can downgrade my bootloader?
shreyasminocha said:
Also, is there any way I can downgrade my bootloader?
Click to expand...
Click to collapse
Flash any 2.X.X ROM. One way is to fastboot flash old stock recovery and flash safest way I think. The other is to flash with twrp make sure after flashing the ROM to flash old twrp IMG after. Make sure you boot right back into twrp.
shreyasminocha said:
Also, is there any way I can downgrade my bootloader?
Click to expand...
Click to collapse
Assuming you're on OOS3 with TWRP for new bootloader,
- Boot into recovery
- Wipe everything except SD Card
- Flash OOS2 zip
- Boot into it
- Goto settings, unlock dev options, enable advanced reboot
- Then reboot to bootloader
- Flash twrp for old bootloader via fastboot, use this one https://dl.twrp.me/onyx/twrp-3.0.2-0-onyx.img
Done
-Now u hv sucessfully downgraded ur bootloader,flash PA or any supported roms
Used mega unbrick tool because I was unable to unlock bootloader and now I'm stuck at 1+ logo (powered by android disappears quickly), did you solve it?
edit: nevermind, adb sideload with stock OOS fixed it.
TravaPL said:
Used mega unbrick tool because I was unable to unlock bootloader and now I'm stuck at 1+ logo (powered by android disappears quickly), did you solve it?
edit: nevermind, adb sideload with stock OOS fixed it.
Click to expand...
Click to collapse
Tried mega unbrick. (bootloop)
Tried OOS3.1.4.zip via stock recovery and success message apears after installation but still bootloop (previusly it was on CM13)
Tried ADB sideload (but not booting)
i have access to ADB and Fastboot.
please help :crying:
iamsandiprathva said:
Tried mega unbrick. (bootloop)
Tried OOS3.1.4.zip via stock recovery and success message apears after installation but still bootloop (previusly it was on CM13)
Tried ADB sideload (but not booting)
i have access to ADB and Fastboot.
please help :crying:
Click to expand...
Click to collapse
Did you managed to sort it out? How?
Mega unbricked guide?

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