1/press and hold both octave switches, then power on the machine. the 5 LEDS should be on.
2/ connect USB cable to PC:
go to device manager and check for for device named "Updater", in audio devices.
3/ make sure no other USB and /or midi devices are connected, check for virtual Midi drivers and audio software.
4/ start Connection software, ignore error message, go to firmware tab press update.