Original GO:KEYS and GO:PIANO can switch models through a hidden service menu
The original GO:KEYS (GO-61K) and GO:PIANO (GO-61P) can run as either model. They share firmware and hardware; a saved setting selects which model you get.
To switch, on firmware 1.20 onward:
- Switch off, connect the AC adapter, and leave PHONES/OUTPUT unplugged.
- Connect a sustain pedal. Hold it down along with the highest key, then hold the power button for about 10 seconds, until the version screen appears.
- Touch + to reach Model Select.
- Play/Stop selects GO:KEYS; Record selects GO:PIANO.
- Switch off and restart.
You can switch back the same way - no firmware replacement or hardware modification needed. The case/display colours and printed controls stay the same, so stickers could help with the changed button functions.
This applies only to the original GO-61K/GO-61P, not newer GO models.
Happy to answer questions!