I just bought an iPhone from a friend who was on at&t. I have t-mobile. the firmware is 3.1 model number starts with MB. what im concerned about is the 5.11.07 modem firmware(is this the baseband?)
i was wondering if the baseband could be downgraded by restoring it to factory settings or is that just a waste of time?
It is possible to jailbreak and unlock your Iphone to use with T-mobile.
Download Itune 9 (DO NOT UPDATE TO FIRMWARE 3.1.3 WHEN ASKED)
Follow this:
[ame=http://www.youtube.com/watch?v=P32KXTqEmfA]YouTube - How To: Jailbreak ANY 3.1.2 iPhone or iPod Touch Using Blackra1n | EASIEST WAY![/ame]
If for some reason that doesnt work, Download Fuzzy Band on Cydia and downgrade your baseband from 05.11.07 to 04.28.01 then use Ultrasnow to unlock it.
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