Hi all,
I was very excited when today my new Rock Pi 4B v1.7.3 arrived. I downloaded the Debian desktop image, but it will just not boot, using an SD card. The green LED is on, but no other LED.
I also tried it with the Armbian XFCE current image, with the same result.
I tried different power adapters, according to the tiny print on it, it supports QC3 with 9V/2A, which I think should be sufficient.
I tried it with and without a keyboard/mouse attached and an ethernet cable plugged in. With no success.
Anything else I can try? Can I narrow it down somehow?
I do not own a USB TTL cable, but it seems I would need this to see any boot messages, right?