Just used bypass method using EliteMossy's patchblocker, much easier and cheaper if you don't have the game already.
1. Copy the CoD4 savedata onto your memory stick by goign to:
Save data utility > find cod4 > copy.
2. Put the memory stick into your computer and find the file in the stick called ps3, then go to Grado_CM and Grado_MP.
3. Open them both in notepad and delete everyting inside them.
4. Copy my codes into the two notepad files.
5. Save.
6. Go onto PS3 and make sure you have deleted the CoD4 that is already saved onto your PS3.
7. Plug the memory stick in.
8. Go to the memory stick and compy the cod4 codes (There should be no warning.)
9. Bypass and go onto cod4.
10. Before going onto multiplayer, go onto splitscreen.
11. Your name should be a different colour.
12. If it's not, you've done something wrong, if it is, wait for 30 seconds in splitscreen.
13. ...30 seconds later back out of splitscreen and go onto multiplayer.
14. Find a FREE FOR ALL OR CAGEMATCH (nobody ever plays the other types).
15. Wait untill people join you (You will always be host).
16. Now start it all up.
Click the Thanks button if I helped.