Do not use a standard Kenwood or Baofeng "K1" cable. While the PT8100 shares a similar 2-pin Kenwood-style audio connector, the data pinout is different. Using the wrong cable will result in "Connection Failed" or "Communication Timeout" errors.
Kirisun PT8100 programming software (Customer Programming Software or CPS) is a dedicated tool used to configure frequencies, signaling, and advanced features for the Kirisun PT8100 mobile radio series. This software allows users to manage up to 256 channels and customize the radio's five programmable buttons for specific operational needs. Key Features of the Programming Software kirisun pt8100 programming software
The software provides a graphical interface to modify various radio behaviors that are not accessible through the front panel: Do not use a standard Kenwood or Baofeng "K1" cable