This report confirms that The device reached its End-of-Life (EOL) software support status several years ago. The final official operating system released by Huawei for the P9 was Android 7.0 Nougat (with EMUI 5). Consequently, users cannot install Android 10 through standard system updates or official Huawei channels. The only method to experience Android 10 on this device is through third-party Custom ROMs, which carry significant risks.
Users attempting to force an upgrade via third-party tools face several risks:
In May 2019, the US government placed Huawei on the Entity List. While this ban severely affected newer devices (like the P30 and Mate 30 series) regarding Google Mobile Services (GMS), it also affected the legacy support for older devices. By the time Android 10 was mature (late 2019), Huawei was restructuring its software division to focus on HarmonyOS and newer hardware. The P9 was already considered legacy hardware and was excluded from the new roadmap.