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How i unlock my iphone its such a headech

A

azad

macrumors newbie
Original poster
Mar 25, 2011
5
0
please guys help me how i unlock my iphone 3gs i were unlock i try to upgrade to iso 4 and now it showing use valid sim what does mean about that i dont have any at&t sim or anything like that is there any way to unlock it with out using at&t sim i'm not so expert if you share any link to download any software i will do that i even cant see anything else for this message in my iphone :(
 
If you were JB and unlocked why did you try to update it thru itunes to official firmware?
You expected it to stay unlocked forever?
What firmware is it on now and when did you updated it thru itunes?
 
not sure abour iso its 4.0. something i update it in dec or jan if is there any way to check firmware let me know i will check and post thanks for your reply
 
Thanks mate for link

here are the details:

Firmware: 4.2.1
Baseband: 05.15.04-6.4_M3S2
 
I am the second person to reply, because everyone else closed the tab when they saw that you dont know how to use this key:

.
 
Thanks mate for your help let me fix it first do this then i will get back to you thanks
 
it hold on the message (Exploiting with limera1n) and not moving forward what i do now what is the problem?
 
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