tortelliniguy said:
I was updating from iOS 5.0.1 untethered and any firmware I can get my phone to work on would help. Better than not having a phone. All I did was pressed update on iTunes and it was about halfway through the process and then it shut off and now it won't boot back to the springboard. It just goes to the iTunes and usb screen. Nothing else is on the screen. No slide to unlock or anything.
This is because you were jailbroken and you just clicked the update button.
When you are jailbroken you must enter DFU mode before restoring. Otherwise it just gets stuck in a recover loop.
If you still want 5.1, then download the iOS 5.1 IPSW for your device model.
Save it to your desktop.
Enter DFU mode.
Open items, click okay, then simultaneously press down the shift key on your keyboard and click the restore button. Now click on Desktop in the pop up window and double click on the 5.1 IPSW. It will work now.
I honestly don't know why you would update to 5.1 if you want to jailbreak. Why not just restore to a custom 5.0.1 IPSW?
But any way, if you want to update to 5.1, you have to enter DFU mode if the device was jailbroken.
You don't have to download the IPSW, but it is way faster to to just download it, and shift+restore to the IPSW then let iTunes download it.
PS: if you changed your host file then your need to change it back immediately or it will never work.
Under no circumstances do you need to modify the host file (that was the iOS 4.x days and is not needed any more....ever). That points it to Sauriks servers. That is completely pointless if your restoring to the latest iOS.