If you have managed to find a verified Sun50iw9p1 image file, you will need specific software to install it on the tablet. Allwinner chips do not use standard ADB sideloading; they use FEL mode (USB Boot).
The 4PDA forum is the global hub for Chinese electronics repair. Their "TV Boxes" section has dedicated threads for Allwinner A64. sun50iw9p1 firmware free
Build your own minimal system using:
The stock firmware is usually a proprietary Android image — locked, bloated, and not user-friendly for Linux enthusiasts. If you have managed to find a verified
Before downloading anything: There is no universal firmware. The wrong display driver (LCD panel), WiFi chip (e.g., RTL8822CS, XR819, or AIC8800), or remote control config will break your device. The stock firmware is usually a proprietary Android
You must match your PCB version (usually printed on the board: e.g., H616_V1.1 or H616_T72_v1.3).