Hold Arp MODE at startup. This will put MEGAfm in update mode with
all LEDS on. Now transfer the SYSEX file with recommended software via
a MIDI interface. The LEDS will blink during the transfer, and MEGAfm
will reboot when complete.
For SYSEX transfers we recommend SYEX LIBRARIAN for MAC and
MIXIOX for Windows.
Note: the firmware version is displayed as X.X for a half second at startup
for revisions 1.1 and onwards.