There is no legitimate, official "helpful paper" or update package from Huawei to get Android 10 on the P9. Any such document should be treated as suspicious unless it's clearly a custom ROM development guide from a trusted source like XDA Developers.
Its last major official update was to Android 7.0 (Nougat) with EMUI 5.0. Huawei never released an official Android 8, 9, or 10 update for the P9. huawei p9 update android 10
If you are determined to run Android 10 on your P9, the only path is through the developer community at XDA Developers . There is no legitimate, official "helpful paper" or
.zip file and flash it. Reboot & Setup: Reboot the system. The first boot can take 10–20 minutes. 🌟 What Android 10 Brings to the P9 If successful, this unofficial upgrade gives the P9 a massive facelift: System-wide Dark Mode: Saves battery on the IPS display. Gesture Navigation: Full-screen experience. Improved Security & Privacy: Granular app permissions. New File System: Often faster and cleaner than old EMUI. YouTube ❓ Frequently Asked Questions Will my Leica Camera work? No, you will lose the stock Leica camera software and must use a basic AOSP camera app. Is it stable? Treble ROMs are often experimental; you might face issues with Bluetooth, SIM card connectivity, or fingerprint sensors. Is there a safer alternative? Yes, just stick to the last official EMUI 8.0 update and use a light launcher. AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 8 sites Install Android 10 on Huawei P9 (LineageOS 17 GSI Treble ... Feb 11, 2020 — Huawei never released an official Android 8, 9,