Jap 10000 original chip, patching using fargo, not wokring on latest ISO's

[gamejester]

Hello,

I have an original PS2 jap 10000, with utility disc 1.1 (yes I know this is not the one you are supposed to have with the 10000, but I bought in HK and they where keeping all of the 1.0 to add the DVD multiregion support to memory carts).
Anyway, I have not patched a game for about 6 months (got a bit fed up with the crappynes of the releases at the time), but now with all the great games out there I am back on the wagon.
I have a lot of Cdrwin Bin/que files from the net which I have patched with Fargo for a jap utility CD, but they do not play in my machine. They do however work in my mates UK machines, one using Neo4 the other Neo2.2 gameshark setup.

Has something changed?
What could I be doing wrong?