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iPhone 4, has been software unlocked with ultrasn0w since launch. Just purchased an IMEI unlock in hopes of getting new t-mobile data plan to work. Restored software, (while still preserving baseband) and phone now checks out as unlocked, and wildcardactivated on However, I only get 1 bar of t-mobile signal in places I used to get 4-5 with on ultrasn0w, and still no data service. (Though i can make calls on that 1 bar.) Do I need to go ahead and let the baseband update to get the cell service to fully function? Just want to make sure, because I know there's no going back once the baseband is updated. ANY help would be greatly appreciated!

asked 30 Mar '13, 22:48

tux101's gravatar image


closed 05 Jul '13, 01:37

spockers's gravatar image

spockers ♦♦

The question has been closed for being "spagnet" by spockers, 05 Jul '13, 01:37

Yes, update the baseband. 1.59 is the cause of the one-bar issue. There is too great a difference between the baseband and the iOS version.


answered 30 Mar '13, 22:52

spockers's gravatar image

spockers ♦♦

edited 30 Mar '13, 22:53

The baseband associated with 5.1.1, (whatever it is) will new enough yes?

(30 Mar '13, 22:54) tux101 tux101's gravatar image

That's 4.12.01, which is only two revisions back from current, so yes. See this chart:

(30 Mar '13, 23:07) spockers ♦♦ spockers's gravatar image

and you cant update the baseband to 4.12.01, you have to restore it to the baseband that comes with 6.1.3, basebands are signed, just like the ios

(31 Mar '13, 01:52) theiphoneguy ♦ theiphoneguy's gravatar image

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Asked: 30 Mar '13, 22:48

Seen: 1,584 times

Last updated: 05 Jul '13, 01:37

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