I just tried to upgrade mine by using the network menu's and pressing 'upgrade'.

It half loaded initially, up to partition 3, then failed initially claiming it could not find the firmware, so I rebooted.
It then claimed the firmware was corrupt and would need to be reloaded, luckily it immediately went to partition 3, downloaded and everything worked on.

I can not understand why this product failed, it's easier than AMX/CRESTRON etc and is relatively easy to set up. I suppose £1000+ could be a reason....