Have left 'Goo running a good 2-3minutes each time, and with USB Loader GX giving me stuck dumps and the remote becoming unsynchronised almost immediately I'd say this was long enough for CFG to either work, or, in this case, not.
Will run a syscheck now....
Sorry to be such a nuisance. Your help is very much appreciated.
SysCheck comes back with the following.
IOS222 (rev 4): Trucha Bug, ES Identify, NAND Access, USB 2.0
IOS223 (rev 4): Trucha Bug, ES Identify, NAND Access, USB 2.0
As you mentioned it might be my drive at fault - it's a Seagate Expansion 1TB and I've never had any problems with it previously.
Please use the Edit function.