LineageOS (Android 6.0 - 7.1 Builds)Though the Mate 7 struggled with open-source drivers due to the Kirin chipset, various developers released stable LineageOS repacks. These offer a "Stock Android" experience that is significantly faster than EMUI.
Unlocked Bootloader: This is the hardest step today, as Huawei stopped providing unlock codes. You may need to use third-party tools like DC-Unlocker.Custom Recovery (TWRP): You need a version of TWRP specifically compiled for the MT7-L09 or MT7-TL10 models.Battery Charge: Ensure you have at least 60% battery to prevent a shutdown during the flashing process. Step-by-Step Installation Guide huawei mate 7 custom rom repack
While the development scene has slowed down, several stable repacks and ROMs still circulate in the community: LineageOS (Android 6