10-11-2020, 03:06 PM
>Is there some trick to enter U-boot?
Unless you have a serial connection, you will see nothing, well samueldr uboot shows on display
So, take off back, flip switch, plug in 3.3V converter, use some terminal emulator, I use putty
('cause you don,t have to remember command switches, others work OK)
Usually hit space to stop boot, then use uboot command line
BUT
the best way to test that Chromium image would be on SD, usb boot is a bit "spotty"
Unless you have a serial connection, you will see nothing, well samueldr uboot shows on display
So, take off back, flip switch, plug in 3.3V converter, use some terminal emulator, I use putty
('cause you don,t have to remember command switches, others work OK)
Usually hit space to stop boot, then use uboot command line
BUT
the best way to test that Chromium image would be on SD, usb boot is a bit "spotty"