hello guys,i have an iphone 4 i used work it with gevey sim,i made the mistake to update it to 5.1 and my baseband change to 4.12.01 and gevey sim does not work.
is there any solutions to make my phone work??

Well, the problem is gevey sim, they used an exploit later used by someone else. Apple noticed that and closed the loophole. Now you are stuck with a baseband what is no longer unlockable and a product which is mostly useful as a brick Sorry, there is no solution for your situation at the moment.

Originally Posted by totti21

hello guys,i have an iphone 4 i used work it with gevey sim,i made the mistake to update it to 5.1 and my baseband change to 4.12.01 and gevey sim does not work.
is there any solutions to make my phone work??

Well there is 1 way of getting it unlocked.
AT&T has started unlocking the iPhone previously unlocked to AT&T.
You just need an AT&T A/C or had an AT&T A/C
Give them a call on their toll free number & ask them to unlock it!
Your phone will be unlocked if it has not been reported as stolen!

I have an AT&T iPhone 4 which I got unlocked from AT&T 8 days ago.
I had bought this off eBay & I am from INDIA so I didin have an AT&T A/C but my friend in US has 1 so I took his A/C details called AT&T verified the A/C & my phone is now factory unlocked!

Give it a try it won't cost anything

If not get a server unlcok for 140$ only other option as of now!

Originally Posted by htcfreak

so I didin have an AT&T A/C but my friend in US has 1 so I took his A/C details called AT&T verified the A/C & my phone is now factory unlocked!

sorry, what is an AT&T A/C?