Updating itunes on iphone
Updating to the latest version of i Tunes and then restoring should resolve this issue Reportedly happens during failed downgrade attempts (i Phone OS 2.0 to 1.1.1, i OS 5 beta to 4.3.3).
Check system time, reset Internet connection, update root certificates. This occurs when the media library on the device is corrupt and cannot be modified or updated.
There is a problem with the permissions of the Mobile Application folder. The baseband does not get updated using this method.
Error occurs when one uses the "last ditch" method for preventing baseband updates on the i Phone 4.
This occurs when you try to downgrade your device's baseband.
Restart computer; change USB port; reinstall system. Known on damaged bundles from unofficial Pwnage Tool distributions or bundles.
See also Apple's KB TA38604 Device was not pwned (signature checks were not blocked). Can also happen when there's a problem with the IPSW.
Permission error either on your computer or the device. Also occurs in restore logs as "unable to convert ramrod 1004." Seemingly caused by a modem firmware chipset malfunction or faulty dock connector, the only fix is to either heat up the chipset or replace the dock connector.
The App you've tried to download in i Tunes couldn't be saved. Use Tiny Umbrella or redsn0w to kick it out of Recovery Mode.