Hi there… the same issue with Rock 4 SE. I don’t know if the solution above is applicable to the 4 SE too… I have tried but no joy so far. Is it possible to get a small recap with the most important steps?
I have tried these…
G_CONFIG_INJECT ‘fdtfile=’ ‘fdtfile=rockchip/rk3399-rock-pi-4c-plus.dtb’ /boot/dietpiEnv.txt
G_CONFIG_INJECT ‘fdtfile=’ ‘fdtfile=rockchip/rk3399-rock-4se.dtb’ /boot/dietpiEnv.txt
G_CONFIG_INJECT ‘fdtfile=’ ‘fdtfile=rockchip/rk3399-rock-4c-plus.dtb’ /boot/dietpiEnv.txt