The mainline kernel for H6 (starting from 6.7) finally has stable HDMI audio and GPU rendering. Avoid old 5.x kernel builds.
The most successful "custom ROM" ecosystem for the Allwinner H6 is not Android, but Linux via the project. allwinner h6 custom rom
| Platform | Link / Search Term | Notes | |----------|--------------------|-------| | | https://forum.armbian.com/forum/42-allwinner-h6/ | Best for Linux on H6 | | FreakTab | https://freaktab.com/ | TV box custom ROMs | | 4PDA (use translator) | Search: Allwinner H6 прошивка | Russian firmware collection | | Linux-sunxi Wiki | https://linux-sunxi.org/H6 | Hardware docs & FEL guide | | GitHub | sunxi-lima / linux-sunxi | Kernel and driver development | The mainline kernel for H6 (starting from 6
