Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5) I have vet 4.2.1 on my phone. I've jailbroken it and I seem to have a problem with Gamecenter. I've tried adding my buddy to friends in the app and vice versatile but yet neither of us get the request. Is this because I've jailbroken my phone? We both have ATT. Would not having same OS ver affect us?