Methods to install stock rom for G8

I will write down methods to install stock recovery, if your phone is not booting anymore. Perhaps it helps someone.

Key Combinations
VOLUME DOWN + POWER: boot into fastboot mode
VOLUME UP + POWER: boot into recovery
VOLUME UP + VOLUME DOWN + POWER: boot into force update

Unlock bootloader
If your bootloader ist locked. Have a look here to know how to unlock it.

Install using force update
Tools needed:

• a stock rom (e.g. from here)
• twrp recovery (e.g. from here)
• stock recovery
• fastboot (I'm using the version provided with the Android SDK)

Steps:

1. Boot to fastboot: VOLUME DOWN + POWER:
2. Flash twrp recovery: fastboot flash recovery twrp.img
3. unplug USB cable
4. boot into twrp recovery: VOLUME UP + POWER:
5. devices internal memory should show up on pc
6. copy stock rom to dload/update.app on device
7. boot to fastboot: VOLUME DOWN + POWER:
8. flash stock recovery: fastboot flash recovery stock.img
9. boot to force update: VOLUME UP + VOLUME DOWN + POWER:
10. update should be installed.

Install using fastboot
Tools needed:

• a stock rom (e.g. from here)
• Huawei Update Extractor
• fastboot (I'm using the version provided with the Android SDK)

Steps:

1. Use Huawei Update Extractor to open the stock rom (.app) with profile unkown.
2. Select BOOT.img, RECOVERY.img, SYSTEM.img and extract them using right-click Extract selected
3. put .img files in the same folder as fastboot.
4. boot device in fastboot mode: VOLUME DOWN + POWER: and on Pc's commandline navigate to fastboot
5. Flash Recovery: fastboot flash recovery RECOVERY.img
6. Flash Boot: fastboot flash boot BOOT.img
7. Reboot BootLoader: fastboot reboot-bootloader
8. Flash System: fastboot flash system SYSTEM.img
9. Reboot. Finished.

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