(adsbygoogle = window.adsbygoogle || []).push({}); Is it possible to set up a lan match on MW2 with 2 PS3's that are diffrent firmware? 3.15 and 3.4?

Yes. The firmware of the PS3 doesnt affect the games that you play on. I think you might need to bypass the PS update though because you wont be able to sign in if the firmware is not up to date. Other than that the answer is yes.

Good Luck