please use Armonia Software... through the Firmware updater page you can upgrade your amps.
Otherwise if your amplifier isn't connected to a pc use the offline method:
- Download the FW from here (product registration required)
- Put the FW in the root folder of a FAT32 usb key
- Insert the key and keep the rightmost button pressed until you hear a beep and see front leds flashing.
Anything about the software inside the hardware incl FW package for download...