now got it running (loaded oiginal tm600 firmware via serial and upgraded to this image using usb flash - nothing else would work - trying to upgrade via serial didnt, giving the above error).
only been running it for an hour so not a lot to go on but it seems flawless on FTA (havent got the energy to convert a line from my existing mediaportal/acamd setup ATM), no widescreen bug, channel changes are instant, EPG (what there is) seems to pick up fast, even the remote seems to work properly etc.
will play with it more after some sleep but it seems to work so far, the question has to be asked is WTF have UR been playing at with their images - assuming the non FTA side works this is now a saleable product - which it most definately hasnt been up to this point - which is why the box has sat in a draw for the last couple of years (it was that or get the hammer out).
I'm provisionally impressed, and that doesnt happen often - a converted FTA box that actually does what it says it will - what is the world coming to?