I have an iphone 3g 16gb it has firmware 4.2.1 and I jailbroke it with redsnow and installed the ipad baseband to unlock it. After this is will not boot past the apple logo. Any help would be appreciated. I tried restoring with a custom ispw and no luck.
OK so trying to boot it up with redsnow didnt work. This is what I did I restored with a custom ipsw that I made with pwnage tool and then it was stuck on the pineapple logo. I put it in recovery mode and used irecovery via terminal to get it to boot up. I have to use irecovery every time to get it to boot up. Why does it do this? Any help would be appreciated.
I have the same problem as you do. My phone is 3gs on 4.2.1 and stuck at the apple logo. Itunes recognizes it and I can add music and stuff to the phone but just cannot get into the phone. I tried your advice on iRecovery but cannot get the darn thing to work.