Downloaded firmware 3.25-0.23 and followed the emergency upgrade procedure.
After this upgrade it seemed to get slightly further in the boot process (at least the progress bar gets further) but still reboots before I can do anything. I think its getting as far as loading dm320 (or something like that).
Don't have my serial adaptor yet so can't give any more information than that at the moment.
Very disappointed, was looking forward to playing with the OSD
