GEM RP220 Owner's Manual page 60

When the Dump progress bar disappears from the screen, the MIDI
dump has finished:
To escape the Midi Menu page and proceed with the selection of other
General parameters, press ESCAPE.
This returns to the starting page of the Midi Menu, from where you can
proceed with the selection of the next General function.
56
MIDI MENU Pg. 4
PRESS ENTER TO EXECUTE
PRESET MIDI DUMP
SELECTION MENU GENERAL : 2
MIDI MENU
PRESS ENTER TO
EDIT MIDI PARAMETERS
SELECTION MENU GENERAL : 2