Since true Custom ROMs (like LineageOS or Pixel Experience) were scarce due to driver incompatibilities and the unlock barrier, the most popular "custom" solution in 2021 was actually modifying the stock ROM. Users who managed to unlock their bootloaders often stuck with a de-bloated stock ROM injected with GMS. Tools like Gspace or direct GMS injection scripts were the go-to methods. This allowed users to keep the stability of the Kirin chipset drivers while gaining access to the Play Store.
Instead of replacing the OS, you can simulate Google Play Services natively or within virtual environments. huawei matepad 104 custom rom 2021
If you own a MatePad 10.4 that is already unlocked , flashing a 2021 GSI ROM like LineageOS 18.1 is a fantastic way to get a Google-enabled, lightweight tablet. For everyone else—leave it on HarmonyOS. The risk of a hard brick in 2024 is simply too high. Since true Custom ROMs (like LineageOS or Pixel