Thanks all for your input.
sorry for late reply. mrs had emergency section at 26wks and baby is now in intensive care :-s
but Ive managed to get it to work, eventually…
even though they are all the same model and firmware, some worked, some didnt. after getting it boot via network and registering with fog it then decided not to boot to network again, via f12 (network boot) or by using netwook as 1st boot option. after a bit of digging and testing i managed to get it booting to network correctly with bios update WY0035.bio. the one installed was WY0021…