"unplug box from the mains
connect null modem cable between your box and pc's com port
connect the box and the supplied psu but don't plug it in to the mains yet
disconnect all other cables
on pc, start universal DreamUp
select correct pc com port
untick 'use network'
click connect.
when you see the message 'connection prepared, now switch on the dreambox', now plug in box to mains
click flash then navigate to your desried image file
when finished, exit dreamup.
leave it powered off for a while, then it should boot"
If you can't get it working after trying all those methods, wait for Master G or Ten Below!...
Hopefully they'll have the answer!
Seems to happen a lot and just needs to be recovered!...