With Android 8.0 Oreo, Google introduced Project Treble. This modularized the Android OS, separating the device-specific, low-level software (the Vendor Implementation) from the core Android framework. The Huawei Y9 Prime ships with Android 9.0, so it supports Treble.
Tap seven times until it says "You are now a developer." huawei y9 prime custom rom
: To use Google services on these ROMs, you must typically flash "Pico" or "Nano" versions of Open GApps to fit within the system partition. TWRP Recovery : A custom recovery like With Android 8
A lesser-known gem. DerpFest offers a "smooth" experience with built-in QS panel mods and a very active Telegram community for the STK-LX1. With Android 8.0 Oreo