(adsbygoogle = window.adsbygoogle || []).push({}); If you took out the hdd of your ps3 2.41 fw and put it into another ps3(friends ps3) with the 2.42 fw would that work because the patch is saved on the hdd then you should be able to play mw2 without updating your ps3.

No you need to format that HDD once it goes into another PS3
BUT
Try using data Transer Utility between the 2 PS3, 3.41 transfer to 3.42 works but 3.42 transfer to 3.41 does not work

neither of them methods work, iv just tried both

for real?
what went wrong with data tranfer?