I was able to get past the blank screen issue by re-imaging the reTerminal with the seeed image as described. However, now I’m unable to use the buttons, led, or buzzer in Python. It seems that these devices don’t exist as files in the linux filesystem. Whenever I try to utilize one of them, I get:
No such file or directory: '/sys/class/leds/usr_led2/brightness'
I checked the folder /sys/class/leds, and there is in fact no usr_led2 (or anything similar) present. Any ideas how to get these devices back?