Cheers for the advice, followed it through a few times but just ended up wit the red xmb and then a crash. re-loaded nand and tried again but its the same.
This is 3.60 to 3.71 m33 is this ok?
this is what i did::
booted in service mode with mms.
pressed square to dump nand.
booted in service mode.
pressed x to install 3.71 m33.
pressed x to turn off.
booted with ac.
red xmb 10 seconds crash!!

did i miss something silly!!!

Rgds

Ratters