An update using my Libre ALL-H3-CC (Tritium) board with RX firmware. I think nothing displaying on the screen was on me for not pushing the correct button on the monitor to select the correct port. When I switched to the NG firmware I selected the correct port, it has been a while since I used the BE setup.
I created a SD card with any early version RX firmware and tried it. It displayed the U-Boot Boot Menu, but the keyboard would not work. The screen counted down with numbers and then it went to the Partitioning SD Card, Please wait screen and appeared to hang-up. I turned off the power to get out of it.
Next I tried the 2024-03-08 build of RX firmware with a new keyboard and it displayed the U-Boot Boot Menu screen, but the keyboard still would not work. The screen counted down with numbers and it went to the Partitioning SD Card, Please wait screen. This time the screen completed and went to the BE splash screen but the keyboard still didn't work. I turned it off and on and the board went to the BE splash screen and the green LED was on.
Next I changed the keyboard from the left bottom USB port, that works with the NG firmware, to the right bottom USB port and tried the RX firmware SD Card again and the keyboard now worked. After more testing, I found with the RX firmware that the keyboard works with the right USB ports and not the left USB ports. With the NG firmware all but the top left USB port works with the keyboard.
How do I get back to the U-Boot Boot Menu screen,so I can select the correct board to use now that I have a working keyboard? Or do I have to reburn the SD Card with a new image?