Not sure you have the Tox3, but it is quite amazing.
They have created several updated firmware’s, the latest being the end of Nov. 2023. It supports HDR 10 and HDR 10+, with Dolby TrueHD and DTS-HD MA. I also supports AFT. This is with the stock firmware.
Toss in CoreELEC and it is a fantastic sub $50 USD media player.