1. Connect the QY100 to either a PC, MAC, or a sequencer (using the MIDI IN/OUT ports) and set the QY100 Host Select switch to MIDI


2. Turn ON the QY100 while pressing [m7(9)], [mM7], and [m7(11)]


3. From the sequencer, load and then play the QY100_v137.mid file. This process will take 18 minutes.


4. Turn the QY100 off AFTER the message Completed is displayed


5. Turn the QY100 on while pressing [AMP SIMULATOR], [PARAMETER], and [SONG]


6. Release those buttons and the screen will display Main ROM V1.37


7. Turn the QY100 OFF, then back ON