Hi guys, I really need some guidance. I JB my iphone in dec 08. the version I have is 2.2 (5G77). I have tried downloading certain apps and they don't run since I need to upgrade my firmware version. I don't know how to upgrade, and I tried to find it but could not. So experts if you could tell me where I can find step by step instructions to upgrade my version from 2.2 to whatever, I don't even know which version to upgrade to. I would also like MMS enabled. So be kind and help me out here. I read something about blackrain, can I use this to upgrade my firmware?