Use the following steps to transfer the original factory files into the GR-50:
- Confirm that the switch on the back panel of the GR-50 is set to "MIDI."
- Connect a MIDI cable from the MIDI Out of the Sequencer or MIDI interface, to the MIDI In on the GR-50.
- Press the SYSTEM button - "System / Mem Protect = On" shows in the display.
- Press the VALUE + or - button until Memory Protect is set to "Off."
- Press the PARAM A UP [GROUP] button until "System / Exclu Unit # = 17" shows in the display. If the display shows a number other than 17, press the VALUE +/- button until it does.
- Play the data from the Sequencer / MIDI player.
GR-50 FACTORY DATA DOWNLOAD: Please find the "Factory Patches (D-series, JUNO-1/2, MKS-series, U-series, GP-8, GR-50)" at https://www.roland.com/us/support/general_apps_tools/
Note: The display will not indicate that the GR-50 is receiving system exclusive data. - Once all the files have been sent, the GR-50 will return the the play menu.