Thanks again.
Searching on CJ91-002 gives me:
LG(SQB)_CJ91-002_CM60026_L15_2091N_V50_070420.rar
LG(xmc)_CJ91-002_CM70033_2091N_V9.1.51_070526.rar
Neither of which appear to be right.
As an aside I'm not 100% sure that I haven't still got the original firmware on the machine, as it still shows correctly in the Firmware version screen on the player.
If that is the case has anyone else seen the REMOVING MEMORY HACK doesn't format the drive to a Windows readable format and a Window FAT format loads unusable gobblegook files and prevents updates?
Also has anyone dealt with e-Bay guy
http://myworld.ebay.co.uk/mkftiramisu? He's got lots of positive feedback and has given me a return address. Should I try returning the item to Hong Kong (at my expense)?