To be able to reset all settings on your UMX 610 you need to press the ASSIGN push-button and hold it down.

If you wish to cause a “temporary factory reset” you should simultaneously press both OCTAVE SHIFT push-buttons.
This will erase all the temporary control elements, but the USER MEMORY will not be eased.

In the case of requiring a complete FACTORY RESET where the USER MEMORY will also be overwritten in addition to all the temporary control elements you should:

Press keys 8,9 and 0
Release the ASSIGN push-button again, the LED of the ASSIGN push-button stays on.
Press the ENTER key
To cancel this process on the last stage please press either the CANCEL key or press the ASSIGN push-button again.