- Connect the Firefly to the Serial Port on your PC, or use an RS232 to USB adapter.
- Run TeraTerm, Putty or other terminal emulator software.
- Open a Com window to the Com Port the firefly is connected to.
- Raise Switch 4 on the Firefly
- Cycle power to the Firefly.
- Type $$$ on your screen (3 dollar signs).
- You should see the characters CMD returned to you