its just a v71 board, nothing fancy, you can probably see a similar picture of it over armbian rk322x forum thread there.
also debug logs doesnt seems to have any meaningful logs here
yes I already tried different cables, and no, unfortunately its the same issue, as I said before, the TV Box works fine with a Android ROM on it with the same HDMI Cable and able to set the resolution between 720p and 1080p, cant find a way to set it to 1024x768 unless I go boot the thing with this libreelec build.
Also im using the cable on this test that I used for my PS5, im pretty sure that this cable can do 4k60 so, I think this cable is more than qualified as good cable.