Hi there,
I have exactly the same issue.
I download “20210108-seeed-ambd-firmware-rpc-v2.1.1-JP.zip” and
I flash my Wio Terminal but without success.
Screen uniform black or uniform white with lcd_backlight ON.
Why this ?
I’ll try with Python…
… Yes, with Python, it works well with text.
I have not figured out how to make a drawing (squares, rounds, colored triangles) with Python on Wio Terminal.
Why ?