Can't unlock bootloader - Xperia Tablet Z Q&A, Help & Troubleshooting

Hello,
Since a few years, I have root, TWRP recovery and XPOSED framework on my device.
I thought It's time to go further and try out new ROM, but to do it I need to unlock a bootloader.
Unfortunately, when I'm entering a fastboot mode (notification LED is blue) the adb "fastboot devices" command does not show anything.
I'm working on Windows 10.
What am I doing wrong?
Is a twrp somehow blocking the access? Or maybe I can do it directly from TWRP recovery.
PS. Drivers are OK, because I'm entering the fast boot mode by "adb reboot bootloader" command.

Im fairly certain its driver on the pc side.
Try it on a different pc.

Adb needs different drivers from fastboot. You havent installes fastboot drivers from the driver package.

Related

Device not listed in 'fastboot devices' when in recovery

I'm trying to flash TWRP, i've got ADB and i've got the Universal ADB Drivers. The device is properly detected when in EUI and my Device ID is displayed correctly when I type 'adb devices', however when I reboot into fastboot and type 'fastboot devices', nothing is listed and cannot continue.
Which drivers do I use? What is it that I need to continue?
Thanks!
Edit: Nevermind, connected it into my linux machine and got it to work easier (lol winBLOWS amirite) and finally got it to recognize the device in fastboot mode. I kept rebooting and failing to get into TWRP. I found somewhere else that before doing 'fastboot reboot' that you should hold VOL UP so you can immediately boot into twrp and make it permanent, which ended up working for me. Freedom!
ItsJono said:
I'm trying to flash TWRP, i've got ADB and i've got the Universal ADB Drivers. The device is properly detected when in EUI and my Device ID is displayed correctly when I type 'adb devices', however when I reboot into fastboot and type 'fastboot devices', nothing is listed and cannot continue.
Which drivers do I use? What is it that I need to continue?
Thanks!
Edit: Nevermind, connected it into my linux machine and got it to work easier (lol winBLOWS amirite) and finally got it to recognize the device in fastboot mode. I kept rebooting and failing to get into TWRP. I found somewhere else that before doing 'fastboot reboot' that you should hold VOL UP so you can immediately boot into twrp and make it permanent, which ended up working for me. Freedom!
Click to expand...
Click to collapse
I believe you need to configure in the developers options that you don't want to have the recovery overwritten on reboot. What also seems to work is to boot into the TWRP from the command line via 'fastboot boot <recovery-file-name>'
I have the exact same problem. I have installed all drivers and adb, but as soon as i am into fastboot and my device doesnt show up in the command line. If i want to install the recovery the command line just says <waiting for device> and nothing happend.
I already enabled the "Enable AT Port" Settings (http://forum.le.com/in/index.php?threads/le-max-2-x820-qpst-not-working.14820/) but i think this is not permanent turned on on my phone, because i have to repeat this step after every reboot.
Anybody got some tips?
Edit: Also booting directly into TWRP doesnt work, 'fastboot boot <recovery-file-name>' just ends up in <waiting for device>..
If you're using Win 8 or Win 10 you should turn off the driver singing verification before installing usb drivers for device.
In your case one of the drivers was blocked from installing and the systom does not see the device after it switches in fastboot/recovery mode.
I am not allowed to post urls, so google this: How to Disable Driver Signature Verification on 64-Bit Windows 8.1 or 10 (So That You Can Install Unsigned Drivers)
RovnyiK said:
If you're using Win 8 or Win 10 you should turn off the driver singing verification before installing usb drivers for device.
In your case one of the drivers was blocked from installing and the systom does not see the device after it switches in fastboot/recovery mode.
I am not allowed to post urls, so google this: How to Disable Driver Signature Verification on 64-Bit Windows 8.1 or 10 (So That You Can Install Unsigned Drivers)
Click to expand...
Click to collapse
Thanks for this Hint! Didnt know this
Nevertheless, no improvement so far. I Unistalled every driver and installed them again, but the PC doesnt recognize the phone when its in fastboot mode
Kampfgans said:
Thanks for this Hint! Didnt know this
Nevertheless, no improvement so far. I Unistalled every driver and installed them again, but the PC doesnt recognize the phone when its in fastboot mode
Click to expand...
Click to collapse
There is a chance, that your computer has installed the WRONG driver for the fastboot mode, so find any related to the phone entries in Device Manager when the phone is connected in fastboot mode, and if it is not "Android Phone/Android ADB Interface" -> remove them with remove driver checkbox checked. Optionally, if nothing changes -> try to manually pick the device driver to Android ADB Interface
RovnyiK said:
There is a chance, that your computer has installed the WRONG driver for the fastboot mode, so find any related to the phone entries in Device Manager when the phone is connected in fastboot mode, and if it is not "Android Phone/Android ADB Interface" -> remove them with remove driver checkbox checked. Optionally, if nothing changes -> try to manually pick the device driver to Android ADB Interface
Click to expand...
Click to collapse
I tried it now with the fifth computer and after a few strange error messages, it "succesfully" installed TWRP.
BUT: There is no TWRP installed on my phone. I followed every tip which i found how to exit the fastboot mode (pressing Vol+ & Power / Removing USB Cable / Tried TeamSpains Automatic Installer).
What is wrong with this phone ? - I think i will oben a new thread, thanks for your help!
Kampfgans said:
I tried it now with the fifth computer and after a few strange error messages, it "succesfully" installed TWRP.
BUT: There is no TWRP installed on my phone. I followed every tip which i found how to exit the fastboot mode (pressing Vol+ & Power / Removing USB Cable / Tried TeamSpains Automatic Installer).
What is wrong with this phone ? - I think i will oben a new thread, thanks for your help!
Click to expand...
Click to collapse
Kampfgans: Klingt irgendwo zwischen lustig und richtig bedrohlich...
Lots of ROMs (including most CM variants) like to "automatically 'recover'" recoveries, that is they overwrite the recovery partition with a copy of the "original" every time you reboot.
I seem to remember that my first attempt to overwrite the stock recovery using "fastboot flash recovery <twrp-image-name>" also didn't succeed in making TWRP "stick".
Within the CM13 which I installed next (over the stock v15) there is a developer option to control that, but in this case I simply used a trick, which seems to bypass the recovery overwrite: I told the phone to boot the TWRP recovery over USB after flashing.
It went like this:
fastboot flash recovery <name-and-path-of-TWRP-recovery> //puts the TWRP image on the recovery partition
fastboot boot <name-and-path-of-TWRP-recovery> //bypasses the recovery overwrite logic of either the bootloader or whereever it hides
That booted TWRP over USB and allowed me to install CM13.
There I disabled recovery overwrite in the deveoper's options and I've never had issues with TWRP disappearing since.
Actually you should in theory be able to leave the stock recovery in place and still use TWRP by booting it over USB on the fastboot command line.
I install drivers and USB but when trying to go to fast boot I receive "waiting for device"

Help device doesn't show in ADB (bootloader unlocked)

At first, I installed the Windows 10 drivers and the first time I put my phone in Fastboot & Rescue mode it showed up on the ADB and I could unlock the bootloader, then I wanted to install TWRP but now the device doesn't show up anymore in the bootloader mode... Any ideas? I also tried Ubuntu with no success But I can clearly see it in the device manager.
What does the command "fastboot devices", when in fastboot obviously, return?
Estatus del problema
Hi i have the same problem can you to resolve it???
m4xxi said:
At first, I installed the Windows 10 drivers and the first time I put my phone in Fastboot & Rescue mode it showed up on the ADB and I could unlock the bootloader, then I wanted to install TWRP but now the device doesn't show up anymore in the bootloader mode... Any ideas? I also tried Ubuntu with no success But I can clearly see it in the device manager.
Click to expand...
Click to collapse

Question Fastboot not being recognised

Once I reboot to bootloader and connect to PC, the command "fastboot devices" does not recognize the device, so when I try to unlock it. it says "waiting for device". I've enabled both OEM unlocking and USB debugging.
The phone shows "fastboot_unlock_verify ok"
"The device is in fastboot mode which is only for debug Android devices. if you want to exit fastboot mode, please long press volume up nad power buttons simultaneously. "
EDIT: Solved it by using the correct platform-tools
I have the same problem. I actually thought that I installed the right sdk platform tools. Can you upload the platform tools that work for you?
Thank you
7tyjupiter said:
I have the same problem. I actually thought that I installed the right sdk platform tools. Can you upload the platform tools that work for you?
Thank you
Click to expand...
Click to collapse
I used the ones from here - https://www.getdroidtips.com/download-adb/#How-to-Install-Android-SDK-and-Platform-Tools
Solved.
I downloaded the platform tools 30.0.5 and reinstall it. Then i reinstall the adb bootloader driver right at the moment when the Nord2 is in the fastboot mode.
cheers
I have no developer options for reboot, bootloader, recovery.
platform tools 30.0.5, where?
Try after reboot into bootloader "fastboot devices". Is the Nord 2 recognized?
For me the correct command was "fastboot flashing unlock".
Hier is the link for the Platform tools 30.0.5
adb - platform tools v30.0.5.zip | by abdyasar for Utilities
Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.
androidfilehost.com
I'm having the same issue. I can't get my Nord 2 show up with "fastboot devices". Sent my phone into the bootloader with "adb reboot bootloader" no problem.
I have used the 30.0.5 platform tools as well as the 31.0.3. Installed Oneplus USB drivers and also tried the universal r13 android drivers (Reinstalled the bootloader drivers while in bootloader mode). Also tried Snoop05s 1.43 adb installer. All to no avail. Just can't get my device to show up in the bootloader.
In Phone settings bootloader is open and USB debugging is on.
Edit: I made it work. Used regular CMD and not powershell and it showed up.
F4t16u3 said:
I'm having the same issue. I can't get my Nord 2 show up with "fastboot devices". Sent my phone into the bootloader with "adb reboot bootloader" no problem.
I have used the 30.0.5 platform tools as well as the 31.0.3. Installed Oneplus USB drivers and also tried the universal r13 android drivers (Reinstalled the bootloader drivers while in bootloader mode). Also tried Snoop05s 1.43 adb installer. All to no avail. Just can't get my device to show up in the bootloader.
In Phone settings bootloader is open and USB debugging is on.
Edit: I made it work. Used regular CMD and not powershell and it showed up.
Click to expand...
Click to collapse
Mine does not show up.... -.-

bootloader unlocked, cannot send fastboot commands to device even though it's in fastboot usb mode

I have recently purchased 3 used Nexus 9 tablets. I want to install a ROM with no Google apps, etc.
I have enabled developer mode, enabled USB debugging, enabled oem unlock.
I have successfully unlocked the bootloader, and re-setup the device, re-enabled usb debugging and booted back into the bootloader in "fastboot usb" mode using adb reboot bootloader (I have also entered fastboot usb mode by powering off and holding the volume down and power buttons.
When I send fastboot devices to the tablet, I get the device listed but without fastboot following it. When I try to flash TWRP, it hangs at the Sending 'bootloader' line. Same if I try to flash using Google's script.
I'm on Manjaro Linux, using android-tools 31.0.2.
The command I'm using is fastboot flash recovery twrp-3.5.2_9-0-flounder.img
If I send fastboot flashing get_unlock_ability I get the same hang at Sending 'boot.img'
It seems for some reason it won't actually respond to fastboot commands. Any suggestions? Is there some setting or file I need on the device itself to enable it? Is there a way to dd or something into the recovery partition?
I'm not great with Android, but I'm pretty good with desktop Linux.
Aloha.
Hours later, and I resolved this by installing the Android SDK and then using the SDK to install fastboot and adb into /opt. The versions there worked, the versions from the community repo and the AUR did not. No idea why.

Question Fastboot?

Hello.
Today I updated from the Nord 5G to the Nord 2 5G.
DN2103_11_A.14
I have enabled developer mode, oem unlock and adb debug.
I can't access fastboot properly. And recovery is different from the previous Nord. There is no option to reboot to fastboot.
I use adb reboot-fastboot and I enter a sort of fastboot. It says:
fastboot_unlock_verify ok
The device is in fastboot mode which is only for debug Android devices. if you want to exit fastboot mode, please long press volume up nad power buttons simultaneously.
Phone is recognized in windows when in adb-mode (normal booted), but does not recognize it when in this new fastboot mode. Just an Android with an exclamation mark on.
Halp?
krugm0f0 said:
Hello.
Today I updated from the Nord 5G to the Nord 2 5G.
DN2103_11_A.14
I have enabled developer mode, oem unlock and adb debug.
I can't access fastboot properly. And recovery is different from the previous Nord. There is no option to reboot to fastboot.
I use adb reboot-fastboot and I enter a sort of fastboot. It says:
fastboot_unlock_verify ok
The device is in fastboot mode which is only for debug Android devices. if you want to exit fastboot mode, please long press volume up nad power buttons simultaneously.
Phone is recognized in windows when in adb-mode (normal booted), but does not recognize it when in this new fastboot mode. Just an Android with an exclamation mark on.
Halp?
Click to expand...
Click to collapse
Don't own this device but try: "adb reboot bootloader" instead and test fastboot commands from there (don't navigate to Fasboot from bootloader).
krugm0f0 said:
Phone is recognized in windows when in adb-mode (normal booted), but does not recognize it when in this new fastboot mode. Just an Android with an exclamation mark on.
Click to expand...
Click to collapse
This is normal behaviour with the OPN2 afaik. Your PC can access the USERDATA folder whilst in ADB mode (aka booted normally) and whilst in the recovery bios. Your pc CANNOT access the USERDATA folder when your phone is in fastboot, or at least I've never been able to on my Nord 2.
Your op didn't include what exactly you need help with. Everything you described is exactly intended behaviour. From my understanding your seem to have booted into fastboot mode, then noticed your PC can't access userdata. That's normal, you can still use fastboot commands and your PC is still connected to the phone. Your "My Computer" folder on PC not showing the phone shouldn't be any cause for alarm.
Now I'm starting to guess, because you might have failed to mention; Are you unable to send fastboot commands to your phone when its in fastboot mode?
Are you trying to flash a file?
What's the issue?
Zombnombs said:
This is normal behaviour with the OPN2 afaik. Your PC can access the USERDATA folder whilst in ADB mode (aka booted normally) and whilst in the recovery bios. Your pc CANNOT access the USERDATA folder when your phone is in fastboot, or at least I've never been able to on my Nord 2.
Your op didn't include what exactly you need help with. Everything you described is exactly intended behaviour. From my understanding your seem to have booted into fastboot mode, then noticed your PC can't access userdata. That's normal, you can still use fastboot commands and your PC is still connected to the phone. Your "My Computer" folder on PC not showing the phone shouldn't be any cause for alarm.
Now I'm starting to guess, because you might have failed to mention; Are you unable to send fastboot commands to your phone when its in fastboot mode?
Are you trying to flash a file?
What's the issue?
Click to expand...
Click to collapse
I am unable to send fastboot commands. Is not recognized by "fastboot devices". And this fastboot mode looks nothing like my previous phones. 2, X, 5T and Nord 5G. <waiting for device>
I want to do my "usual routine" with my new phones. Unlock, flash twrp or other recovery, and flash magisk for root.
After a "full wipe" of ADB and fastboot drivers, I reinstalled and got it working!
nothing. only recovery mode
vol down+ power =recovery mode
vol up + power = normal boot
I finaly boot into fastboot mode with adb command only (adb reboot bootloader)
With buttons wont work.
But i can't enable Volte/Vowifi (thats why i wanted to boot there).
Can you send adb commands when in recovery mode ?
I'm trying to enable VoLTE too, but adb only detect phone when powered normaly, not when in recovery mode.
i don't know about adb but in fastboot you can.
I can't enable volte/vowifi in fastboot with this commands.
https://androplus.org/wp/wp-content/uploads/2021/08/onr12.jpg
Fastboot commands start with fastboot, those are adb commands.
krugm0f0 said:
After a "full wipe" of ADB and fastboot drivers, I reinstalled and got it working!
Click to expand...
Click to collapse
krugm0f0 said:
Hello.
Today I updated from the Nord 5G to the Nord 2 5G.
DN2103_11_A.14
I have enabled developer mode, oem unlock and adb debug.
I can't access fastboot properly. And recovery is different from the previous Nord. There is no option to reboot to fastboot.
I use adb reboot-fastboot and I enter a sort of fastboot. It says:
fastboot_unlock_verify ok
The device is in fastboot mode which is only for debug Android devices. if you want to exit fastboot mode, please long press volume up nad power buttons simultaneously.
Phone is recognized in windows when in adb-mode (normal booted), but does not recognize it when in this new fastboot mode. Just an Android with an exclamation mark on.
Halp?
Click to expand...
Click to collapse
i am having the same issue can any one help
krugm0f0 said:
After a "full wipe" of ADB and fastboot drivers, I reinstalled and got it working!
Click to expand...
Click to collapse
pls contact me in 9650930525 in this number and help me how u did it
drkanurag said:
i am having the same issue can any one help
Click to expand...
Click to collapse
pankspoo said:
On Android 12 OnePlus removed fastbootmode so no unlocking nothing.
But how did u booted in fastbootmode on oos 12 i can't understand
Click to expand...
Click to collapse
roldev said:
Downgrade to latest A11. Unlock via fastboot. Do what you want, then. All explained here or/and telegram group. Sorry, don't have time to do step by step guide now. Cheers.
Click to expand...
Click to collapse
Follow this guide to downgrade to A11 https://community.oneplus.com/thread/1596759
Then you should be able to access fastboot.
krugm0f0 said:
After a "full wipe" of ADB and fastboot drivers, I reinstalled and got it working!
Click to expand...
Click to collapse
Could you go into more detail on what you did in the entire process exactly? Did you use the drivers and adb install from the 15 sec installer? Did you simply uninstall them in the Windows Device Manager and click on "update drivers" to find the local drivers from the 15 sec installer? Which ones did you choose? Sorry, these might be dumb questions, but I'm admittedly very stupid when it comes to Windows and drivers in particular.
I did the exact thing I described above but I'm still just getting that message. Additionally, "fastboot devices" won't list anything and "fastboot oem unlock" will wait for the device for eternaty. "adb devices" on the other hand will list my device while not in Fastboot.

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