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.bin

After 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

@ajb2k3 forgot to mention regarding the soldering. I used one of my pencil point solder tips and did a continuity check between all the pins. no bridges were found.

Maybe my response comes like 'mustard after the meal' but anyhow. I just got a FACES set delivered. Using the M5Burner I flashed the latest UIFlow firmware.
Using the Thonny app (under MS Windows 11) I was able to use REPL.

Needed firmware is here https://docs.m5stack.com/#/en/module/faces_keyboard?id=easyloader

Two negative impressions with Core2 and FACE-RFID:

When booting the Core2, it creates strange noise through the speaker for about 3 seconds When off, there is a constant quiet noise through the speaker when USB is connected

hI @teddygag could you please contact me by roni@m5stack.com so I could assist you better and resolve this issue? Thanks :)

thank you feedback . we will correct this mistake info.

PROBLEM SOLVED
Thanks for your reply.
I found function :

termInit(); termpurchar();

in the TFT_terminal.ino.

There's some example code on the github here:

https://github.com/m5stack/M5Stack/blob/master/examples/Unit/CardKB/CardKB.ino

https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/CARDKB

this is literally what I needed. thank you very much!