Backup via MIDI System Exclusive

1. Connect a MIDI SysEx device to MIDI Out.
2. Press the [Shift button] and hold it.
3. Press the [Store button] four times and release.
4. Release the [Shift button].
5. Turn the [alpha dial] to select data to dump (e.g., Dump All Int, Dump Sounds).
6. Press the [OK button] ([Parameter/Value button]) to start transfer.

Source: Microwave — microwaveperformancemanual.raw (manual)