Cannot progress further after "adb reboot bootloader" command. - Sony Xperia XZ Premium Questions & Answers

I'm trying to install LineageOS 19.1 but I'm having trouble as stated in the title. Every guide I've read mentions that I need to flash TWRP recovery in which case I need to go in fastboot. Problem is once in fastboot I cannot progress any further. I'm not sure what step I missed or what I'm missing. I can detect my device with "adb devices" while the device is on and "adb reboot bootloader" puts it into fastboot (notification light turns blue) but any other commands just result in "waiting for any device" after going into fastboot. Here's some additional info:
- Model is SO-04J Docomo
- Can confirm that bootloader is unlocked (OEM unlocking can be toggled on/off)

actually, you have to unlock your bootloader first (which erases DRM Keys to take photos etc) and you surely haven't done that YET... Just follow the Instructions from Sony and you might wanna consider Backing up DRM Keys first, before you unlock your Bootloader.
1. Type in this number into your Dialer, if it (Bootloader unlocked) says YES, then your Bootloader is already unlocked but if it says, that Bootloader unlock is supported, backup your DRM Keys first and then
2. "Install the device drivers and platform tools" (from Sonys Website) (i just post the link to the driver for you to make it easier)
If you're using Windows for this, I mentioned it before (I had the same Problem as you do) And figured out, that you have to tap on your Device first IN SYSTEM MAINTAINCE (mine was labeled "Android") then Update driver, search on PC, select from List, choose ADB Interface (Samsung Android ADB Interface) and go ahead and unlock bootloader first (which ensures, TWRP CAN be flashed and to install custom ROM)

Related

[Help] Can't unlock bootloader

I just got a new Nvidia Shield K1 tablet. It installed OTA to marshmallow latest. I try to root, I follow instructions. Getting stuck on first step, of unlocking bootloader.
adb reboot bootloader - works no problem
fastboot oem unlock - just says 'wait for tablet' but tablet doesn't have any option on bootloader to unlock recovery. just has continue (boots android normally), fastboot protocol (goes back to the same screen), recovery (goes to some recovery where it's doing nothing), etc. i try every option, apparently it is missing option to unlock bootloader?
tell me which infos i should provide to help troubleshoot, thanks
NVM, solved it.
had to sudo when doing fastboot oem unlock.

Unable to Unlock Bootloader (help!)

I've tried online guides to unlock bootloader, but messed up in some point and now I'm stuck.
1st. Download indepth test and reboot to bootloader within the app.
2nd. Tried adb devices successfully
3rd. Fastboot oem unlock nor Fastboot flashing unlock run (output: fastboot oem unlock failed "remote unknown command")
4th. Decided to make a factory reset (just becase I had to make an stupid desition)
Now I can reboot into fastboot again, because in depth test app won't install anymore. Installer says "Installation failed -An app with the same signature has already been installed"
I've unsuccessfully tried to flash stock rom from recovery but thein depth test seems to be "installed" without front user interface, also fasboot reboot bootloader get stuck in waiting for any device.
Can someone have a solution I already tried anything that comes to my mind.
Thanks.
I was able to solve the problem installing extractly the same apk.
The "fastboot oem unlock" dont work for me
What work on me 5pro is "fastboot flashing unlock"
Then flash twrp and vbmeta
To relock bootloader "fastboot flashing lock"
Source https://forum.xda-developers.com/realme-5-pro/how-to/bootloader-unlock-tutorial-t3985003
Other, might helpful source:
https://forum.xda-developers.com/realme-5-pro/development/rom-pixel-experience-t4053357

My bootloader is locked and phone is showing system destroyed

My bootloader is locked and phone is showing system destroyed
Bootloader unlocking: https://en.miui.com/unlock/download_en.html If already (previously) enabled OEM unlocking in developer options.
You need xiaomi account associated with the device]
Boot into Bootloader; or fastboot mode: Press and hold power button and vol up button simultaneously during reboot . Follow Unlock procedure first.
If you have account issues , then you may not unlock using the above.
Official firmware must be flashed first.
Download fastboot drivers : https://miui.blog/any-devices/xiaomi-adb-fastboot-usb-drivers-tool/
Install the drivers first.
Download fastboot rom:
https://drive.google.com/file/d/1OLjrB9I3e1Ee0H_rB-DKYQBNlPc6K-Eh/edit (Older, but safe to try)
OR
https://bigota.d.miui.com/V12.0.5.0...HINXM_20210111.0000.00_10.0_in_a80e87d485.tgz
Extract files in to a folder. (Suggested: No space in path address)
Go inside the .\Firmware and click flash_all.bat
Wait to complete the process.
(Present files in the device will be overwritten. )
Then one can proceed with OEM unlocking systematically again.
[Alternatively, you can use : MI Flash Tool.

Pixel 3a - OEM Unlocking is active but no option to unlock bootloader

Hi Everyone,
I'm having some difficulties unlocking my Pixel 3a to install a ROM.
I have activated developer options, activated OEM Unlocking, but when I get into the bootloader, there is no option to unlock the bootloader itself...
The only options I have are :
Start
Power off
BarCode
Recovery Mode
Restart Bootloader
I have no idea what's happening and haven't found anything online that would even hint at what is wrong. Does anyone have any idea about what is going on with this ?
Thanks for your help.
when booted to bootloader you need to execute the command
'fastboot flashing unlock'
see here:
How to Unlock the Bootloader on Your Pixel 3a
The first thing you'll always have to do before getting your customization game on with most phones is to unlock the bootloader. Doing so opens the true potential of the device, allowing you to root, install TWRP, Magisk, custom ROMs, and other mods. No matter your wants or needs, there's no way...
android.gadgethacks.com
To Unlock bootloader
- Install adb and fastboot on your PC. https://dl.google.com/android/repository/platform-tools-latest-windows.zip
- Run through the initial setup if you haven't already, if you haven't don't bother logging into your google account.
- Enable dev options(settings>about phone>build number>tap it 7 times).
- Go into settings>system>advanced>dev options>oem unlocking, click the toggle.
- While still in dev options scroll down a little and enable usb debugging.
- Plug your phone into your pc. If or when the phone asks you to trust the computer make sure to check the "always allow this computer" check box.
Open up command prompt type into the cmd window
adb reboot bootloader
The phone will reboot into fastboot mode.
Now type into the cmd window
fastboot devices
See if it lists a device, if not you need to install the drivers I linked to. If you had to install the drivers try the fastboot devices command again after installing them, it should list the device now.
type in:
fastboot flashing unlock
You will then have to use the phone to select yes to the unlock. you use the volume keys to select and the power button to confirm.
Your bootloader is now unlocked and you follow one of the root methods.
reboot your phone

zte a7 blade 2019 instant switch to os from fastboot*

Hi, i am loading booting to bootloader from adb with commnad (adb reboot bootloader) this isnt working, only restart its instantly switch to normal os, any ideas ?
Run
Code:
adb reboot
or
Code:
fastboot reboot
oh sorry man, i am idiot, and i am say it wrong.. I trying boot to fastboot but not working instantly switch to os, any ideas please ?
Unlock bootloader if not done yet.
where i unlock bootloader ? In developer settings ? (i have unlocked)
Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com
xXx yYy said:
Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com
Click to expand...
Click to collapse
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"
Matyas66055 said:
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"
Click to expand...
Click to collapse
I have new thread, where i am writing all info :/ https://forum.xda-developers.com/t/zte-blade-a7-2019-fastboot-mode-missing.4462035/
I don't know if you are still interested in accessing Fastboot but you can access it using a specific firmware version.
Still, let me tell you that unlocking the bootloader is virtually impossible. Since the well-known generic method doesn't work for the SoC SC9863A, you need to have a special Fastboot's program version and a dedicated private key that only they provide.... and I emphasize the word "dedicated" since apparently ZTE did not use a generic key to sign their ROMS. At least on this device.
Unless they decide to release the key or give support to unlocking the bootloader, all we can do is wait for them to change their minds. Because they don't want to provide it. I know because I tried to order it several times.

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