I just got a brand new Rock Pi 4B and I already have a boot issue. It is a Rock Pi 4B with 32GB of eMMC and so I just follow the steps available here (option 2) to install the OS. I downloaded Debian desktop, flashed with a SD card, inserted and booted the Rock Pi 4B. So far so good, it booted nicely and the first thing I did was to update and upgrade the OS. I then followed the steps to install the OS in the eMMC:
- Download again the Debian Desktop
- sudo dd if=os.img of=/dev/mmcblk1
Then just shut down and removed the SD card.
Now the problem is that it did not boot, and worst, it does not boot with the SD card inserted. The blue led sequence is a solid on, and then after a while two quick flashes, pause, two quick flashes, and so on.
Tried the read from UART ( at 1152000) the boot sequence but I’m getting rubbish. Tried to read at different speeds, like 9600 but got nothing.
So, any help will be welcome. Thanks.