: Programs like STB Erom Upgrade or the software bundled with your CH341A programmer. 2. Step-by-Step Installation Guide
Since this is a motherboard-level file (MB3502A), you cannot usually install it via a standard USB menu. You will need:
Wait for the progress bar to reach 100%. during this phase, as it will "brick" the motherboard.
Turn on the Cherokee 20HD receiver (if using RS232) to initiate the handshake.