why no mention of the audio not working?
If the sound does not work...it should've been mentioned in the OP. not nice to learn this post flashing
Requirements:
1. Unlocked Bootloader
2. You need ramdisk of current version
3. Download Stock Firmware Online firmware database ⋆ TEAM MT Developers
4. Look for the brand and model and download the update.zip
5. Use the Huawei Extractor to extract the ramdisk.img
6. Zip looks like this "http://update.dbankcdn.com/TDS/data/files/px/sxx/Gxxx/gxxx/vxxxxx/f1/full/update.zip"
7. Download TWRP and Disable_Dm-Verity_ForceEncrypt_12.21.2019.zip from here.
8. AOSP 10.0 ROM from here
Instructions:
1.. Check correct version and download stock firmware and extract RAMDISK.img accordingly from above.
2.. copy Disable_Dm-Verity_ForceEncrypt_12.21.2019.zip on SD card
3. Boot into Fastboot Mode.
Fastboot:
4.. Flash TWRP -> fastboot flash recovery_ramdisk twrp8.img
5.. fastboot reboot recovery (the first time booting should show up the twrp menu)
if the boot message "2. Press Volume up for 3 seconds" appears must do a Factory Reset in the Stock Recovery. After a reboot the TWRP menu shows up. You can activate advanced reboot in developer settings to boot in TWRP menu by pressing recovery mode
TWRP:
6. Wipe -> Advanced Wipe -> select data + cache + dalvik-cache -> Swipe to wipe -> back to start menu
7. Install -> Select Storage -> select Mircro SD card -> OK -> select Disable_Dm-Verity_ForceEncrypt_12.21.2019.zip -> Swipe to confirm Flash
8. Reboot -> Bootloader (not System!!!)
Fastboot:
9. fastboot flash ramdisk RAMDISK.img
10. fastboot flash system system-quack-arm64-aonly-gapps.img
11. fastboot reboot
If you get stuck in a bootloop while it boots, go backin TWRP and format your data. Boot again.
Features:
Gapps included, pre installed Root by SU, Dark Mode, Substratum works like charm. Fingerprint works.
Bugs:
No Bugs
IMPORTANT Note :
To use fast charging enable it in Settings -> Phh Treble Setting -> Huawei features -> Huawei fast charge -> Mid-fast
To fix display blur enable it in Settings -> Phh Treble Setting -> Huawei features -> Enable blurry UI workaround
If the sound does not work...it should've been mentioned in the OP. not nice to learn this post flashing