@vitaj You might try raising an 'Issue' here:
https://github.com/Xinyuan-LilyGO/LilyGo-EPD47/issues
And then attract their attention with an email here:
sales@lilygo.cc
E-Paper displays show their last image until refreshed.
Did you try a simple example from here?:
https://github.com/Xinyuan-LilyGO/LilyGo-EPD47/blob/master/examples/screen_repair/screen_repair.ino

@fender21 Did you find a solution. I have exactly the same issue. Brand new devices out of the box. They have firmware on them which boots and runs diagnostics. All Diags appear to run successfully. I cannot get it to go into DFU Mode. Tried many combinations. When booted in diags the USB port is not recognizing anything either.

@ohiojoe Nice Work!

@cony54 LilyGO believe that this community site is off line:
"As our forums are under maintenance, if you have a question about a product, please post the appropriate thread on our GitHub."
on their main web page:
https://www.lilygo.cc/products
It is just me (!) and a few other users manning this site.
You can try raining an #Issue on their GitHub and maybe lewis he will read it?

Same issue here. Using T-Beam v1.1

@teastain2 Thanks for the idea

Did you find a solution to this?

@kadri Can you provide code for how your setting up the two devices?

@witchdoc Perfect! Thanks for getting back to me.

@charlyd Good to hear!

@papadeltasierra BTW the ESP32c3's USB mode is disabled; unless you enable it, it should run as a standard serial port (which is what I am now seeing).