: Flash GApps if necessary, wipe cache again, and reboot the system.
Some ROMs may have minor hardware bugs. Check the specific XDA thread for your ROM to see if a "fix" or "patch" ZIP is available. huawei mate 9 custom rom
Developers have to backport drivers, hack the kernel, and use shims to make newer versions of Android work. Expect functional daily drivers, but not perfection. : Flash GApps if necessary, wipe cache again,
, the community has extended its life through various custom builds: Android 11 (LineageOS 18.1 GSI): Developers have to backport drivers, hack the kernel,
Move the files to your Mate 9's internal storage or an SD card.
Before diving into the technical "how-to," it is essential to understand the "why." The Mate 9 shipped with Android 7.0 Nougat and officially received updates up to Android 9.0 Pie (EMUI 9). While EMUI was functional, it was heavy on resources.
While official support stopped years ago, the community has ported Android 10, 11, and even 12 to the device.