Elektron Digitone
The Digitone is a FM synthesizer from Elektron.
I picked a second-hand unit from a local store for a nice discount, repaired it, and it now works perfectly.
Firmware update
In order to update the firmware, the unit must be connected to a computer and the .syx
file must be uploaded using the Elektron Transfer application.
However in order for the device to appear in the MIDI IN/OUT selectors of the app you must make sure that the unit is configured for USB MIDI, which can be done from the Settings
menu of the synth.