Loading the Operating System
The MIDI file, O_S112s.MID included with this text file has the System of the MS-1 that can be loaded from a MIDI sequencer that can play Standard MIDI Files. We recommend that you upgrade your MS-1 with this system disk even if your MS-1 reads the newer Sundisk Flash RAM cards since this newer system fixes some problems with MS-1 operations that were on earlier systems.

1. Connect the MIDI out of the sequencer to the MIDI in of the MS-1.
2. Load the O_S112.MID MIDI file into the sequencer.
3. Turn the MS-1 off and turn it back on again while pressing the 4 and 5 buttons. This will take you to the "Boot Mode".
4. Play the MIDI file on the sequencer. You should see "Receiving...." displayed on the MS-1 screen display. When the file is completely loaded the MS-1 display will read "Completed" and return to the Bank A screen.
If you upgrade your system, the sounds that were in the A and B banks will be lost, so we recommend that you back them up either to a PCMCIA card or bulk dump them through MIDI. The steps for creating a bulk dump backup of the Internal banks sounds is on page 23 of the manual.