Originally posted by lostcaptain
Tried that too. Is there a step-by-step guide somewhere on how to do it? Maybe I need a better guide. I've already followed like 12, but who knows. I guide preferably not on this forum, because I have tried plenty of tutorials on this one.
Try This :
TRANSFERING PATCH TO ONLINE:
Turn off, and unplug the power cable from both systems (PS3s).
Plug in an ethernet cable from one PS3 to the other.
Plug the power cable back into each system, and turn them on.
Go to 'Settings -> System Settings -> Data Transfer Utility'
The instructions on screen will guide you through the transfer process, and it should be fairly straightforward.
Make sure to transfer the contents of the JailBroken PS3 onto the Online PS3, not the other way around. We want to send the patch to the online system so we can use it online. Transfer from v3.41 PS3 to v3.50 PS3 (or whatever the current firmware is)
After the transfer is complete, turn both systems off.
Plug the ethernet cable back into your router, or use wireless (however you connect your PS3 to the internet).
Turn on your Online PS3 (current firmware system)
Start up Co

MW2. Go to Play Online (sign in if you haven't already).
Start the match.
You should have your modded patch.