Unlocked iPhone SIM problem

[kenshinkitten]

My brother has the 1st gen iPhone unlocked for t-mobile.
Last night he plugged it into his laptop and iTunes popped up and it gave him the option to restore it.
He says it only gave him that option not to upgrade but just to restore. So he clicked it, it restored the phone After it was finished restoring he took it out because it wasn't registering in iTunes and plugged it back in that is when the iPhone said there was an inactive SIM card. And where we are now.

I tried putting in my SIM card to see if that would help, it wouldn't register that one either.

I have no idea how to jailbreak a phone, my boyfriend handles this stuff. I myself have a 3G iPhone but nothing crazy like this has happened to me.

Help me please.

 

[jmann]

By restoring instead of upgrading the phone it removes the unlock from the baseband (the part that needs to be modified to allow usage on T-Mobile), so now all you need to do if you are on 2.2 is download and run quickpwn and follow the easy instructions, and your phone should be unlocked again after quickpwn is finished running.

You can download quickpwn from here http://blog.iphone-dev.org/