@djoness I also have V4.0 Box, have same X96Q-Armbian-H313 V4.0 boot screen, so, I burn "Armbian-unofficial_25.05.0-trunk_X96q-ddr3_bookworm_edge_6.12.11_server.img.xz" which you said to SD Card, My Box not work.Than i press and hold the Av button,The LED.Show Red,and. Screen Black. nothing. i don't press ,it will be inside to Android.
what are you do, can make inside to Armbian.Tell me.
Thanks a lot.