If the console will not update via the normal method through the automation, then there is as second option.

Make sure that the firmware is in the root directory of the USB stick.

Press, and hold in the 'Recorder' sections 'VIEW' button while switching the console on.  This will cause the console to boot into the update mode.

Once in the update mode, plug the USB memory stick into the top panel USB connector.  The M32 will wait for the USB drive to become ready and then run a fully automated firmware update.

If a USB stick fails to get ready, updating will not be possible and it is recommended to switch the console off and then restart from the beginning.

The update process will take two to three minutes longer than the regular boot sequence.