For issues, crash dumps, or feature requests:

Based on the analysis of Diagnostic Tool V1.028b, we recommend:

Enters a mode to troubleshoot communication issues by printing every byte received from the computer.

sudo diagctl rollback 1.027b --keep-config

Are you trying to or calibrate the label sensor using this version of the tool? KONFIGURACJA I INSTALACJA DRUKARKI PO WIFI - imatrix.pl

Diagnostic Tool V1.028b