question about this...
the COD games.
even if i play disk copy of COD i can still get banned for doing that?
The CoD games are really notorious. They scan the HDD, looking for files that indicate the console is modded, such as common homebrew apps, the presence of the GAMES / ISOs directories etc. If it determines that the console is modded it reports it to both Sony and Activision as soon as you try to enter a multiplayer game, so no, it doesn't matter whether you play it from ISO or from the original disc. Even reverting to OFW will not necessarily save you, because there might be leftover files. If you want to play them safely you have to both revert to OFW (or DB, that also works)
and do a factory wipe to remove all possible traces of mods.
Now, BO2 specifically has an "Anti-Ban" EBOOT, a patched executable that is supposed to remove those checks, allowing you to play it on modded systems. You can try searching for it online. The thing is, I have never tried it myself, nor do I know anyone who has, so I can't really comment on how effective it is, or in other words, if you use it and it turns out that it's no good and you get banned anyway then don't blame me. Also, an Anti-Ban EBOOT does not protect you from getting banned if you cheat, since those are checks on the server side.
Later COD games (BO3, Ghosts etc.) unfortunately don't have working Anti-Ban EBOOTs. The ones posted online are either outdated or fake. You can't play them on modded systems.
BTW this is all only related to multiplayer. COD can only report on you if you're logged in to PSN when running it. If you just want to play single player then just make sure you're not logged in to PSN when you run COD. It's perfectly safe. It's also OK if the console is connected to the Internet as long as it's not logged in to PSN.