I've successfully flashed the FACES-Firmware, using this command line
esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 ./m5stack-micropython-tft-repl-v1.0.binAfter this, I got this prompt:
0_1705265747985_faces-mpy.jpg
The OSError is due to a missing main.py. After adding this with mu-edit, the error no longer occurs.
The REPL is also available on the serial interfaces, accessing it with tio /dev/ttyUSB0