[Xperia Z5 Premium General] grosseader:
25.11.2017 -

Update: I've just used same tutorial to unlock Z5 6653 and it was success ! Good luck to everyone!

23.09.2021 -

Files shared again by request. If any questions occur - write me

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This is solution that i used to unlock found device Xperia Z5 Premium, which was locked with fingerprint, bootloader is locked and FRP (google account security) is activated.

Dear friends, as everyone here, i must say USE THIS GUIDE ON YOUR OWN RISK ! ! !

I'm not responsible for bricked devices, if your dog unplug the cable or you lost electricity durring flashing!

First i want to say HUGE thanks to @YasuHamed !!! He knows why !

*to get in flash mode: press volume down and connect device to PC; - green notification LED

*to get in Fastboot mode: press volume up and connect device to PC; - blue notification LED

DOWNLOADS:

Xperia E6853 - Google Drive

drive.google.com

Xperia E6853 - Google Drive

drive.google.com

*I'm trying to share folder with unattended access, but google asks me everytime. Usually i respond fast, but do not hesitate to PM me if you have no access.

GUIDE:

1st you need Sony flashtool and drivers, and ADB fastboot.

-Download Sony Companion to have all sony drivers.

-Download Flashtool (flashtool-0.9.23.1-windows.exe) and install it.

-I updated Flashtool from 0.9.23.1 to 0.9.23.2. Simply download (x10flasher.jar) and replace existing file in C:/Flashtool/.

-Next download ADB fastboot (minimal_adb_fastboot_v1.4_setup.exe) and install it.

2nd i flashing another Android

using Flashtool thru flash mode, for clean start of the device.

-Open Flashtool (C:/Flashtool/Flashtool.exe)

-Connect your device in flash mode.

-Click on the black XE button on the right end of the toolbar in FlashTool.

-Choose your device, choose region and customization and on the right side, bellow the picture of the phone you can see "Available Firmware:"

Here i've choose 1300-1579 Internal Promoter 32.0.A.6.170 / R2B. This is old 5.1.1 Android which allow you to get in to the phone menu itself and do the FRP Unlock.

-Click on the firmware , bellow phone picture, and download it.

-After it is downloaded, close that windows and on main window, will see in console that firmware is prapairing for flashing.

-Phone is still connected in flash mode, and flashing will start automaticly when firmware is ready.

Have patience! Prepairing and flashing took around 10 mins for my PC.

3rd Bypass FRP ( google account security lock)

-check FlashTool console if flashing status is DONE, and if it is, unplug your device and power it up.

-now download the video file ( Bypass Google Account SONY Xperia Z5 - How to Remove FRP Lock.mp4 ) and follow the steps as it is shown.

On the last step when you have to switch from GUEST to Owner user, my device just frozen on waiting screen, and after 5-6 minutes screen went disturbingly black, like it is dead and went OFF.

I power it up and voila, there was 2 steps to complete setting up of the new phone.

4. If you want you can unlock your bootloader now

(if it is available by SONY) and use custom roms, root and etc.

-go to dialer and dial *#*#7378423#*#*

-tap Service info” go to “Configuration ” go to ” Rooting Status.

-if Boot loader unlock allowed says ” Yes” then you can follow below guide. If it says NO - sorry, you can't unlock your bootloader.

-you need your IMEI number, You can check it in settings menu or dial *#06#.

-turn on OEM Unlocking and USB debugging options in Settings > Developer options. (To enable Developer options menu, go to Settings > About phone , and tap several times on Build number.)

-switch off your Sony Xperia Z5 Premium by pressing power button.

-now connect phone in fastboot mode. To do so, you must hold Volume UP and plug device to PC.

-next go to https://developer.sonymobile.com/unlockbootloader/ and finish the steps using your IMEI to get unlock KEY from Sony.

When you have the key, you will see instructions on the same site, what command you have to use in fastboot ADB. To get in Fastboot ADB:

-on your PC go to the folder (C:/adb/) where you installed minimal ADB and fastboot, hold shift + Right click, choose Open command window here.

-check if device is propperly connected. Write in CMD : fastboot devices . Your device should be listed there if it is connected in fastboot mode.

-now you have to write the command, same as on Sony site with the key: fastboot -i 0x0fce oem unlock 0x“your unlock code”.

example : – fastboot -i 0x0fce oem unlock 0x87eb234h6212g5646

-If it says OK [time] finished , you are done well.

After bypass FRP you can flash Android 7.0, there is no problem or security issues.

I've used those guides:

https://xdaforums.com/xperia-z/general/tutorial-how-to-flash-stock-roms-t2240614

http://www.gogorapid.com/unlock-bootloader-sony-xperia-z5-premium/