I have a Rock 2F and it does not boot.
When I plugin the powersupply only a solid green LED lights up and nothing more.
I’ve tried several images and tried burning them using several tools on several SD cards… but nothing helps.
Do I have a defective unit or am I doing something wrong?
You need to connect a serial console/debug UART TTL cable on the pins 6 8 10 of the 40-pin I/O header.
If you don’t have such a cable, 3 wires to an other SBC’s 40-pin header also works. Else order one and wait until you have it and then post the U-Boot boot text here.
I think the board is defective, the maskrom switch is ripped off. I can connect to it in maskrom mode and flash a bootloader but it stays in maskrom.
I returned the board to the vendor.