Failed to activate iphone 3GS after factory restore.

Insert a different SIM card.

i also have the same problem

I have had the same thing for almost a month now..

you would not believe the run around I am getting from this. I even had a store employee tell me it was a hardware issue and that I had to buy a brand new iphone 3gs for ONLY $150.

uh.. no thanks. It was working fine and dandy three weeks ago before I had to upgrade to ios 5.1!!! This is a joke

here is the latest update:

If you jailbroke your phone before, your host files have been modified and cannot communicate to apples servers.

I talked with a high level tech support at apple today, and he told me my phone is officially unlocked, but they can see when I jailbroke the device and that the host files aren't working.

Therefore, I have to either modify the host files to correct the problem or restore the iphone with another computer.

I am going to try both suggestions and see what I can do.

If you don't know how to modify host files, I wouldn't try it... I have read endless forums of how to do it. It's not terribly complicated if you are familiar with terminal and text edit on a mac.

So aron, are you able to activate ur 3GS now ?

I'm facing same problem

After trying almost everything and browsing many forums like this for almost a month, so I could get my 3GS unlocked, I gave up.. I think apple/at&t cannot unlock 3GS's... I have found may ppl facing same problem with their 3GS.

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Thanks Sibulut. I think I'm in same boat, but will try to explore. Mine was successfully restore to factory setting (os 5.1), but I don't have AT&T sim and I'm not in US. Are you back yo 4.1 and whats ipad baseband upgrade meaning?

Well, according to my own experience at&t SIM card has no help.. I have an at&t SIM card and it will not activate either.. on the contrary, my brother has an iPhone4 and he was able to activate using a non at&t SIM. So I guess problem is an earlier jailbroken 3GS.. even if you can restore it to factory settings with upgraded firmware, it will not activate and unlock!

I have updated my firmware to 5.1.1 with a baseband update (baseband is the phone software).. you can easily jailbreak but you cannot unlock with iPhone baseband.. you have to upgrade to iPad baseband first, then you can easily unlock and start using your phone. (Google for tutorials)

Pity, I have struggled for about a month to activate my iPhone through apple/at&t authorization.. they could have informed me at first place that my phone will not (or may not) activate.

Hi, I have iphone 3gs and I factory unlocked. I update with IOS6 and try to activate in itunes, but I have a message that appear and say that the apple server is occupied and saturated, try again later ???

mi Iphone 3gs 32 GB, has a 06.15.00 baseband. I living in Costa Rica, Central America an try to unlock in itunes witha SIM AT&T first and next with my SIM card.

If your phone was jailbroken or hacked to unlock it before you requested a legitimate unlock, it is now permanently bricked.

Discussing jailbreaking is forbidden by the terms of service here.