well, after many attempts I managed to boot Armbian on the TVbox with emcp chip, you really have to change the parameters in defconfig and recompile to generate ou-boot-sunxi-with-spl.bin,but the internal network card still doesn't work from the ik316 which is the same h616 used network usb and the HDMI output doesn't work.
The latest version of Armbian: Armbian_23.8.3_Orangepizero2_b gives error after u-boot:
starting systemd-udevd version 252.12-1~deb12u1
[ 2.600465] thermal thermal_zone0: gpu-thermal: critical temperature reached, shutting down
[ 2.608985] reboot: HARDWARE PROTECTION shutdown (Temperature too high)
I used the version Armbian 22.08.6 Jammy with bleeding edge Linux 5.19.16-sunxi64 and with modified spl.bin