This is a new & unknown variant.

I need the serial logs for the download and the upload to include it on Chirp.

Thanks and 73

Pavel, I tried the BTECH.py file you posted to the KT8900 group and received the same error.  I am going to see if I can find a 32bit system around here to run portmon on and do a data capture.  May be a day or two.

 ....

Attached is the debug.log from chirp