I jailbroke my iPhone 4, and after about a month, it got bricked and I had to upgrade to 4.1. My phone just wouldn't turn on at all, but eventually it worked. So now I have 4.1. The only thing is that in the top left corner, instead of 'AT&T' it says 'Boo-yah' the way I set it to with MIM.

I'm a little hesitant to use limera1n for this reason. It sounds like there are possibly issues with it. If something goes wrong, would I be able to restore my iPhone?

Will the iphone dev team's release be a safer bet?