Crucially, this scaling only affects the Android interface. The firmware still allows for 4K video playback (up to 4K H.265/H.264/VP9) at 60 fps to play at full resolution.
: Open AndroidTool , go to the "Upgrade Firmware" tab, and select your downloaded Android 9.0 .img file. rk3229 android 90 firmware top
: Specific Android 9.0 ROMs have been released for devices like the HK1 Mini . Crucially, this scaling only affects the Android interface