Can not boot to android OS

#1

Steps:
flash spi
dd if=/dev/zero of=zero.img bs=16M count=1
rkdeveloptool db MiniLoader.bin
rkdeveloptool wl 0 zero.img
rkdeveloptool rd
flash os
dd if=Android12_rkr12_20240522/ROCK5_ITX_hdmi0_dp0_dp1_dsi0_gpt.img of=/dev/mmcblk1 bs=4k status=progress

Fan is running at max speed, no hdmi output.

Does android os broken?

#2

Can you flash Android this way?

#3

This is the way in the documentation provided by radxa