Oberheim Matrix 1000 firmware update EPROM version 1.20 Version 1.20: - Includes Gligli's detune code. - Fix for NRPN parameter addressing that is equivalent to the one implemented by Gligli, but slightly different. - Code to fix the NRPN inc and dec functions. - Code to display parameter values as they are adjusted over MIDI, and the detune value as well. For installation just replace chip U804 on the main board.