I've already unlocked this phone once, but now I'm having difficulty... It was on 4.2.1 with ipad bb and worked fine. I stopped getting service on t-mobile after like 2 months, so I read that I needed to redo the whole jailbreak/unlock process. So I did that, bricked it, and could only restore with 4.1 because I was stupid and didn't have any blobs. Now when I install cydia and then Ultrasn0w (I still have ipad bb), I can't connect to T-mobile. I've done all the steps like putting it in and out of airplane mode and power cycling, but I'm not sure what the reason is. Basically, I want to know if it could it be the version of redsn0w I used? Or Is there a way to get it back to 4.2.1 (tinyumbrella keeps in recovery for some reason)? I feel like I'm close, but I don't know what to do, lol Thanks a lot guys!