Question unlocking bootloader command FAILED - Sony Xperia 1 IV

I'm at a total loss here...
phone has unlocking and USB debugging toggled on.
phone is not a US phone and unlocking is allowed.
phone goes into fastboot mode (by turning on while holding volume)
"fastboot devices" command returns my phone is in fastboot and connected
"fastboot oem unlock 0xPASSWORD" returns FAILED (remote: 'Command not supported in default implementation')
and fastboot: error: Command failed
I have no idea what to do or try from here.

If I try to flash an image i get:
FAILED (remote: 'Download is not allowed on locked devices')
so, defiantly still locked out of the bootloader

Try below steps
1. Ensure you have platform tools 33.x , 34 has issues.
2. Try to reboot to bootloader from pc.
adb reboot bootloader
3. Try running
fastboot flashing unlock unlockcode

Try it :
fastboot oem unlock
or
fastboot flashing unlock

SOLVED I am so happy. I'm on day 3 of trying to get the phone to bootload.
there is definitely a difference between going into fastboot through the phone itself and through adb commands on PC.
fastboot through the phone shows the drop down menu and no blue light illuminated on phone.
fastboot through adb phone is black screen with a blue light on right corner on the phone.
the windows drivers behave differently between the two. I am running windows 10. phone model XQ-CT72
steps that solved the issue. For anyone in the future.
I downloaded and used platform tools version 33.0.3 NOT version 34.
"adb reboot bootloader" used from windows PC
opened windows device manager found my "discovered device" and forced it to use the SONY driver downloaded from sonys website. It would not detect it on its own, or even use the SONY driver without me telling it to specifically. device manager> "andorid" > properties > update driver > browse computer for driver > installed sony driver
everything worked following these instructions here https://www.droidwin.com/unlock-bootloader-and-root-sony-xperia-1-iv/

alexriethmeier said:
There is definitely a difference between going into ...
Click to expand...
Click to collapse
fastboot, part of the android bootloader, abl
fastbootd, part of recovery

I had same issue and same solution fixed it what you showed and did. I was terrified, after investing so much money on this phone and not getting it unlocked.

You won't need to go through such hassle if you just use Linux VM (a Ubuntu distro will do). The driver works out of the box.

Related

[Q] Asus TF103C Bootloader Unlock

I recently purchased 2 Asus TF103C stocked with Android 4.4.2 and running on an Intel processor. I'd like to load a custom OS/ ROM to them for work however I have not had any success finding a process that allows me to do so. I have managed to root the tablet successfully but that is the extent of my accomplishment to date. I understand that this is a fairly new device and not much has been uncovered yet to achieve this task. Asus is also hesistant to release an unlocked bootlooder update. If anyone is aware of a process whether through adb or the likes please raise your voice to help the community out on this one.
Vibestarter said:
I recently purchased 2 Asus TF103C stocked with Android 4.4.2 and running on an Intel processor. I'd like to load a custom OS/ ROM to them for work however I have not had any success finding a process that allows me to do so. I have managed to root the tablet successfully but that is the extent of my accomplishment to date. I understand that this is a fairly new device and not much has been uncovered yet to achieve this task. Asus is also hesistant to release an unlocked bootlooder update. If anyone is aware of a process whether through adb or the likes please raise your voice to help the community out on this one.
Click to expand...
Click to collapse
Before following steps bellow mentioned don't forget to install USB and ADB drivers
Also download minimal ADB and Fastboot tools ( for links use google search its easily available)
Configure your compute for fastboot Enable USB debugging on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode
$*adb*reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing*
fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>",
fastboot is not configured properly on your machine.
If you see "no permissionsfastboot", try running
fastboot as root.
From the same terminal, type the following command to get info of the bootloader:
fastboot oem-info
To unlock type
fastboot oem unlock
And press enter
May this will unlock your boot loader in general
Press Thanks Button If You like My Work & Posts?
fastboot oem unlock Failed
The-Immortal said:
Before following steps bellow mentioned don't forget to install USB and ADB drivers
Also download minimal ADB and Fastboot tools ( for links use google search its easily available)
Configure your compute for fastboot Enable USB debugging on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode
$*adb*reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing*
fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>",
fastboot is not configured properly on your machine.
If you see "no permissionsfastboot", try running
fastboot as root.
From the same terminal, type the following command to get info of the bootloader:
fastboot oem-info
To unlock type
fastboot oem unlock
And press enter
May this will unlock your boot loader in general
Press Thanks Button If You like My Work & Posts?
Click to expand...
Click to collapse
Hello, I tried your command suggestions to unlock the bootloader and they failed. The command 'fastboot oem-info' does not return anything and 'fastboot oem unlock' returns RESULT: FAIL (unkown OEM command) on the tablet and in the cmd window. Thanks for the suggested attempt nonetheless.
Still having this problem
fastboot oem unlock fails on the TF103C and it says RESULT:FAIL(unknown OEM command). It would be great if Asus could release a tf103c_unlock.apk utility like they have for other Asus tablets (for instance the TF701T has tf701_unlock.apk which works).
Asus, please help!

Unlock bootloader

My Z5 compact was updated to Nougat using the OTA service.
The bluetooth integration to my car stopped working and I read that this was a noted problem I decided to flash my phone back to Marshmallow.
I'd installed custom ROMs on previous HTC phones following info from XDA so was pretty confident.
After following the Sony guidelines and obtaining my unlock key I am unable to get it to work in fastboot mode.
I suspect that it is a USB problem at one end or another.
If I connect up the phone to the PC using the original lead I can find it using adb devices and the device is showing up as error free "Sony sa0113 ADB Interface Driver" in Windows 10 device manager.
However the phone isn't charging and I can't get it into Fastboot by holding the up vol key and plugging in the USB lead.
I can get a black screen with the blue led by running adb reboot bootloader and the phone is recognised from fastboot devices but when I try to unlock the bootloader I get an error:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot -i 0x0fce oem unlock 0xB4D9AxxxxC359F2C
...
FAILED (remote: Command did not succeed)
finished. total time: 0.042s
Any help appreciated.
PhilG57 said:
My Z5 compact was updated to Nougat using the OTA service.
The bluetooth integration to my car stopped working and I read that this was a noted problem I decided to flash my phone back to Marshmallow.
I'd installed custom ROMs on previous HTC phones following info from XDA so was pretty confident.
After following the Sony guidelines and obtaining my unlock key I am unable to get it to work in fastboot mode.
I suspect that it is a USB problem at one end or another.
If I connect up the phone to the PC using the original lead I can find it using adb devices and the device is showing up as error free "Sony sa0113 ADB Interface Driver" in Windows 10 device manager.
However the phone isn't charging and I can't get it into Fastboot by holding the up vol key and plugging in the USB lead or by running adb reboot fastboot
If feels like I haven't go the fastboot USB drivers but I can't see how or where I can add them.
Any help appreciated.
Click to expand...
Click to collapse
Disable driver signature enforcement then reinstall sony drivers
tapiwasam said:
Disable driver signature enforcement then reinstall sony drivers
Click to expand...
Click to collapse
Thanks. I think I am OK there because I accepted the drivers from an unverified source during installation.
Also I can see the phone with both adb devices and fastboot devices
However when I run adb reboot bootloader the phone reboots but comes up with a blank screen with the blue led.
adb reboot bootloader just goes into bootloader mode and not fastboot mode which is needed to unlock it. Go directly into fastboot by typing adb reboot fastboot
Then when your phone led is flashing blue, run your fastboot "oem unlock" command.
Saw now that you already tried that sorry about that.
Tried running cmd with admin privileges to see if that shows any difference?
Also from sony:
Please note! It will only be possible to unlock the boot loader for certain releases. You can check if it is possible to unlock the boot loader of your device in the service menu by following the steps below:
In your device, open the dialler and enter *#*#7378423#*#* to access the service menu.
Tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
Click to expand...
Click to collapse
PhilG57 said:
My Z5 compact was updated to Nougat using the OTA service.
The bluetooth integration to my car stopped working and I read that this was a noted problem I decided to flash my phone back to Marshmallow.
I'd installed custom ROMs on previous HTC phones following info from XDA so was pretty confident.
After following the Sony guidelines and obtaining my unlock key I am unable to get it to work in fastboot mode.
.... snip....
Click to expand...
Click to collapse
You don't need to unlock your bootloader to simply downgrade to official MM! Just use flashtool to flash the appropriate MM ftf. There are plenty guides available on XDA and elsewhere.
I'm lost in your explanation.
You wanted to unlock your bootloader to be able to downgrade your phone? That's right? And it's fine to me, but you don't need to do that if you don't feel like. Unlocking your bootloader is nog necessary to downgrade to MM via flashtool.
So you tried to unlock your bootloader. But what you write what happened afterwards is completely unclear to me, because it contradicts itself.
-->> "Also I can see the phone with both adb devices and fastboot devices"
Fine. This means your connected with your phone and fastbook recognizes your phone. So bootloader is unlocked and software to control that works fine.
-->> "However when I run adb reboot bootloader the phone reboots but comes up with a blank screen with the blue led."
Fine, so you unlocked your bootloader, and rebooted in fastboot.
-->> Obviously. It's an unlocked bootloader, you can double unlock it or something like that. You can relock it if you want (which doesn't make any difference for what you want to do) but that's a different method.
Is there any reason that you absolutely need to a second method to enter fastboot mode? Or any fastboot mode? It could be possible with another kernel, but I don't see the point to flash another kernel. I would just leave it like it is.
PhilG57 said:
Thanks. I think I am OK there because I accepted the drivers from an unverified source during installation.
Also I can see the phone with both adb devices and fastboot devices
However when I run adb reboot bootloader the phone reboots but comes up with a blank screen with the blue led.
Click to expand...
Click to collapse
that is notmal behaviour, that is fastboot mode, indicated by that blue LED
Thanks for the clarification that I don't need to unlock the bootloader to downgrade using flashtool. What I didn't say was that I couldn't reinstall Nougat using the Sony tool software restore option or get anywhere with flashtool because the phone won't go into the blue led mode by inserting the USB and holding the up vol button. I did try running flashtool in one window and the command line tools in another with the idea of running flashtool first and then unplugging the phone and replugging it to use command line to get the blue LED state, but that doesn't work because the command line tools can't see the phone once flashtool is running and has addressed the phone.
From what i read, i assume you are on nougat and want to go back to MM, right?
So you would need flashmode instead of fastboot mode.
You get there with holding Vol down button and plugging in USB cable on turned off phone.
Flashmode also shows a green notification light instead of the blue one.
If you having Problems to get there, please check following:
make sure to have latest version of flashtool installed http://www.flashtool.net/downloads.php
install drivers from your flashtool\drivers folder
don't use an USB 3.0 port or cable(have heard of some people having trouble with)
PhilG57 said:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot -i 0x0fce oem unlock 0xB4D9AxxxxC359F2C
...
FAILED (remote: Command did not succeed) <- this
finished. total time: 0.042s
Any help appreciated.
Click to expand...
Click to collapse
OP, I had the exact same problem as you. At the time I tried absolutely everything but never found the culprit. So after several months I actually succeeded today
This is the guide I followed - https://forum.xda-developers.com/z5-compact/general/guide-how-to-root-z5c-painful-using-t3549388 and it worked perfectly.
A few pointers:
- Go to the service menu (*#*#SERVICE#*#*) before you begin, before you turn OEM Unlocking ON from Dev Options .
- Take note of what it says in Configuration and Firmware.
- Now enable OEM Unlocking and take note again, it should say stuff like Model Number: Unknown and other unknown stuff.
- Reboot - IMPORTANT.
- Use the guide I gave you and you will be fine, it took me ages to find a solution but now I'm on MM and rooted
Hope I helped :fingers-crossed::fingers-crossed::fingers-crossed:

impossible to unlock nexus 9 - adb said "no device"

Hello
I have a problem when I want to unlock my nexus 9.
First I have a problem because my tablet freezed.
I have made a factory reset, then google said me : used the first account to use your tablet" but I lost this account
So I want to flash my tablet.
to do that, I use the tutorial on HTC site. on step 5 they say:
type adb oem unlock
but the CMD windows just say:
<waiting for device>
then I try to show devices with adb device but my window don't show device.
to do those step my tablet was in recovery more "fastboot usb"
can you help me?
thanks
Jack
@jackvig Looks like you encountered Factory Reset Protection!
You can not use adb commands while in fastboot mode! "fastboot devices" should list your device.
And the command to unlock is "fastboot oem unlock" not adb!
Plus you won't be able to unlock the bootloader unless you have selected the option to do so in developer options, since you have factory reset that option may have been turned off even if you set it previously.
Your going to have to try and remember your account password to make the device usable.
Depending on what version/patch of the rom your device is on it maybe possible to Bypass FRP, google it.
If your device was on a very recent patch level, no bypass trick will work.
corkiejp said:
@jackvig Looks like you encountered Factory Reset Protection!
You can not use adb commands while in fastboot mode! "fastboot devices" should list your device.
And the command to unlock is "fastboot oem unlock" not adb!
Plus you won't be able to unlock the bootloader unless you have selected the option to do so in developer options, since you have factory reset that option may have been turned off even if you set it previously.
Your going to have to try and remember your account password to make the device usable.
Depending on what version/patch of the rom your device is on it maybe possible to Bypass FRP, google it.
If your device was on a very recent patch level, no bypass trick will work.
Click to expand...
Click to collapse
thanks @corkiejp for your reply
I agree with you for fastboot instead of adb but the result is the same.
I cannot go inside the tablet to change parameters
Some forum said that I can Unlock in recovery mode
Is it true?
when my tablet is in recovery mode (On/off + Vol Up)
the tablet show me device state : locked
I am in state HBOOT
the on my computer I do that
C:\Users\maison>fastboot oem unlock
...
(bootloader) ability is 0
(bootloader) Permission denied for this command!
OKAY [ 0.015s]
finished. total time: 0.018s
after I go in FASTBOOT mode then :
C:\Users\maison>fastboot oem unlock
< waiting for device >
what can I do to have the Key to unlock
No you need fastboot mode to unlock the bootloader!
Is the command "fastboot devices" listing your device. If not check your drivers for your device.
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
HT4B6JT00881 fastboot
after that i try :
C:\Program Files (x86)\Minimal ADB and Fastboot>adb sideload volantis-ota-n9f27m-ad1aee0f.zip
loading: 'volantis-ota-n9f27m-ad1aee0f.zip'adb server is out of date. killing...
* daemon started successfully *
serving: 'volantis-ota-n9f27m-ad1aee0f.zip' (~0%) * failed to read command: Invalid argument
i think tablet i now connected to computer
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem unlock
...
(bootloader) ability is 0
(bootloader) Permission denied for this command!
OKAY [ 0.011s]
finished. total time: 0.014s
As suspected the option to unlock is not selected in developer options.
If your successful in sideloading an OTA image in recovery mode (not fastboot mode), you will still encounter FRP on booting the device.
Edit: - As said before ADB commands do not work in fastboot mode. And fastboot commands do not work in Recovery mode!
As said before your only hope is to remember your account and password used (or the very last account you used on the device might work).
If you haven't updated the rom in the last year, you maybe able to use FRP Bypass trick.
jackvig said:
Hello
I have a problem when I want to unlock my nexus 9.
First I have a problem because my tablet freezed.
I have made a factory reset, then google said me : used the first account to use your tablet" but I lost this account
So I want to flash my tablet.
to do that, I use the tutorial on HTC site. on step 5 they say:
type adb oem unlock
but the CMD windows just say:
<waiting for device>
then I try to show devices with adb device but my window don't show device.
to do those step my tablet was in recovery more "fastboot usb"
can you help me?
thanks
Jack
Click to expand...
Click to collapse
You should not have factory reset if you do not know the account password. It is protected by "factory reset protection". To prevent it from being used if it is stolen. You are most likely going to need the password for the account that was logged in when you reset.
Flashing is not going to help. And as mentioned previously, you cannot unlock the bootloader now since you cannot go into developer options and turn on oem unlocking.

Mi8 unlock sucessful, but bootloader stillocked

I just waited 360 hours and unlocked a new Mi8 dipper as I have done with 5 Xiaomi phones previously. Everything looks normal. MiUI v10 says it is unlocked. With USB debugging activated the device code shows up with the 'adb devices' command. However when it comes to actually modifying the bootloader in Fastboot mode things look very locked in place. In the terminal console 'abd devices' command shows no devices. Similarly when trying to load TWRP with 'fastboot flash recovery TWRP. img' command it searches to find no device and ends with a fault. I have tried with 3 different USB-C cables on three different PC's. Two with Windows 10 with ADB tools and another on current ArchLinux with 4.20 kernel and ADB tools.
Incidentally, my wife has an untouched and therefore unlocked Pocophone F1. It does the same thing as above.
Has anyone heard of such a tbing? Is it possible that Xiaomi thinks this phone has been unlocked when in fact the bootloader is still locked?
As far as a fix goes,the unlock tool says its locked and won't try again to unlock it. This would be utterly painful were it not for Lawnchair launcher coming to the user experience rescue.
It is your computer, try to reinstall adn, driver, etc,..
If bootloader is locked, you still can type fastboot devices, but cannot flash anything with the error that you dont have permission to edit partiton.
khanhdx said:
It is your computer, try to reinstall adn, driver, etc,..
If bootloader is locked, you still can type fastboot devices, but cannot flash anything with the error that you dont have permission to edit partiton.
Click to expand...
Click to collapse
Thanks. Will try again in different variations. A few questions:
1. Is it advisable or not advisable to use a USBv3 or 3.1 port instead of USBv2 ?
2. I have tried a few different Windows 10 drivers from various sources. Can you recommend any specific driver for Xiaomi?
Thanks for helping. I will be very disappointed if I can't mod this phone.
p-we said:
Thanks. Will try again in different variations. A few questions:
1. Is it advisable or not advisable to use a USBv3 or 3.1 port instead of USBv2 ?
2. I have tried a few different Windows 10 drivers from various sources. Can you recommend any specific driver for Xiaomi?
Thanks for helping. I will be very disappointed if I can't mod this phone.
Click to expand...
Click to collapse
I think no different between USB2 and USB3 in this case.
Try uninstall all driver and app related to xiaomi.
Then Disable Signed Driver Enforcement.
Then install latest Miflash: http://en.miui.com/a-234.html (file at step 1)
Then open Mi Unlock folder (the one u found MiUnlock.exe), hold Shift + right click, select open PowerShell here.
Type cmd, enter.
Reboot phone to fastboot, connect to pc.
Type fastboot devices, enter.
khanhdx said:
I think no different between USB2 and USB3 in this case.
Try uninstall all driver and app related to xiaomi.
Then Disable Signed Driver Enforcement.
Then install latest Miflash: http://en.miui.com/a-234.html (file at step 1)
Then open Mi Unlock folder (the one u found MiUnlock.exe), hold Shift + right click, select open PowerShell here.
Type cmd, enter.
Reboot phone to fastboot, connect to pc.
Type fastboot devices, enter.
Click to expand...
Click to collapse
I think I'm close. I installed MIFlash and installed drivers. I now see the device ID in Windows PowerShell in fastboot mode which I did not have before:
C:\Users\wdirk\Downloads\miflash_unlock-en-3.3.827.31\miflash_unlock_en_3.3.827.31>fastboot devices
46265bfe fastboot
But when I enter 'fastboot flash recovery twrp.img' (the twrp.img file is in the same directory), the phone immediately goes to another mode (no fastboot logo with very small text on top left of screen) and nothing happens. So fastboot sees the device but will not write twrp recovery. Ideas?
So I tried Minimal ADB and Fastboot again. Positive that the device shows up:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
46265bfe fastboot
But goes into blank screen with very small text on top left with more inforation this time:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash recovery twrp.img
target didn't report max-download-size
sending 'recovery' (41796 KB)...
FAILED (command write failed (No error))
finished. total time: -0.000s
p-we said:
I think I'm close. I installed MIFlash and installed drivers. I now see the device ID in Windows PowerShell in fastboot mode which I did not have before:
C:\Users\wdirk\Downloads\miflash_unlock-en-3.3.827.31\miflash_unlock_en_3.3.827.31>fastboot devices
46265bfe fastboot
But when I enter 'fastboot flash recovery twrp.img' (the twrp.img file is in the same directory), the phone immediately goes to another mode (no fastboot logo with very small text on top left of screen) and nothing happens. So fastboot sees the device but will not write twrp recovery. Ideas?
So I tried Minimal ADB and Fastboot again. Positive that the device shows up:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
46265bfe fastboot
But goes into blank screen with very small text on top left with more inforation this time:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash recovery twrp.img
target didn't report max-download-size
sending 'recovery' (41796 KB)...
FAILED (command write failed (No error))
finished. total time: -0.000s
Click to expand...
Click to collapse
I never face any case like this. So maybe i can help you.
Try install different version of TWRP maybe can help..
ShafiX94 said:
Try install different version of TWRP maybe can help..
Click to expand...
Click to collapse
Very strange but I followed your steps on another PC in exactly the same way and now it has flashed TWRP successfully. It did require using blue USB3 port
Thank-you! :good:
Glade to hear you solved it.
For the record: I had the exact same problem as yours. If I recall correctly, the only thing I had to do was to rename the recovery file to: recovery.img then wait a minute or so. Which is strange, but worked.
First tried to boot Pitchblack recovery when it succeeded then tried it with TWRP (recovery.img).
If anyone finds themselves here. Go to https://forum.xda-developers.com/mi-8/how-to/guide-to-issues-flashing-unlocked-mi8-t3911389
p-we said:
If anyone finds themselves here. Go to https://forum.xda-developers.com/mi-8/how-to/guide-to-issues-flashing-unlocked-mi8-t3911389
Click to expand...
Click to collapse
I am glad that you sorted your issue.
But I can assure you that the issue was strictly caused by your PC. It truly should not matter which USB port you use. We have 3 Mi8 in our house and I have unlocked 2 of them using an older laptop with a broken usb 3.0 port.
For the benefit of others who may experience this issue.
Always. remove peripheral devices from the PC such as an external hard drive, when perform tasks such as unlocking the bootloader or unbricking a phone.
Windows should be up to date and I can tell you that professionally, we absolutely require that people temporarily disable windows defender and antivirus when attempting to resolve these kinds of issues, as you are indeed affecting the bootloader of the device.
Windows antivirus will often remove files that it miscategorises as a virus. In example, if you attempt to download and install the All In One Tool, windows defender will neuter the software 90% of the time.

Question Issues unlocking

So I just purchased this phone and am trying to follow the instructions on the Sony site. The rooting status in my service menu says my devices should be able to be unlocked.
Device is on android 13 on latest update, OEM unlock and USB debugging are both enabled.
I downloaded the usb drivers and the platform tools from the Sony site.
I opened a command prompt in the platform tools folder and when I run fastboot devices I get a response
When I run the command with my unlock code, I get the error
FAILED (remote: Command not supported in default implementation)
I tried to go to device manager to update the drivers, however when I do that it says the best driver is already installed.
I read in another thread to try to boot into the bootloader rather than fastboot. When I select reboot to bootloader the device seemingly shuts off.
EDIT: OK, I'm dumb and was in fastbootd mode rather than fastboot. I've now entered fastboot correctly (holding volume up while I plug it in, getting a black screen and a blue LED), updated the drivers correctly, and am now getting the error that the device is already unlocked. Now I guess I just need to verify that it is indeed unlocked, anyone have some advice on that?
EDIT 2: OK it seems to be going through the unlock process despite that error rather than the expected confirmation. After a few reboots it is now giving me the setup process again so I hope it worked. Leaving thread up for others who have the same issue to stumble accross.

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