For all errors check this

http://uberant.com/article/all-itunes-error-solved/




Errors -9815
Set exact date, restart computer.

Errors -9814
Set exact date, restart computer.

Errors -9800
Set exact date, restart computer.

Error -50
Delete Storm Vedio, QuickTime, iTunes, then reinstall iTunes.

Error 1
Unable to downgrade. Try changing the USB port (the back one of chassis is better) and restart computer.
The installed version of iTunes may also be too old. Update iTunes.

Error 2
Sn0wbreeze 1.6 Custom Firmware has a ASR patch problem. Use sn0wbreeze 1.7 or PwnageTool. Device isn’t bootable.

Error 6
Not enter the downgrading mode, change USB port (the back one of chassis is better) and restart computer.

Error 10
LLB is missing from the IPSW. The device cannot be booted up. The trick to skip the baseband update no longer works.

Error 11
Removed bbfw file in the firmware folder of an unzipped IPSW.

Error 13
Occurs when you want to install a beta firmware with iTunes for Windows (actively blocked by Apple; beta users are developers and therefore must have a Mac).
Error 13 may also signify a USB problem. Check the USB connection and try other direct ports or maybe the USB cable is an older one. Device isn’t bootable.

Error 14
Custom firmware update fail (PwnageTool). You have to restore the device with a custom firmware. Update to a custom firmware isn’t working. Device isn’t bootable. 2
USB Problem. Check the USB connection and try other direct ports or maybe the USB cable is an older one. Device isn’t bootable.

Error 17
Custom firmware update fail (sn0wbreeze). You have to restore the device with a custom firmware. Update to a custom firmware isn’t working. 2

Error 20
Searching correct fault.

Error 23
Searching correct fault.

Error 26
False version of the NOR flash firmware. Use the correct sn0wbreeze version.

Error 29
See Apple discussions thread about this problem.

Error 37
iPod touch 2G LLB patched with the 0×24000 Segment Overflow was used on an iPhone 3GS custom firmware. Known on damaged bundles from unofficial PwnageTool distributions or bundles.

Error 1002
Are you restoring to a stock apple firmware or a custom pwn firmware? Either way make sure you are in DFU mode first.

Error 1004
This is caused by a failure to match the Baseband Nonce currently in memory to the Nonce returned in the BasebandFirmware SHSH blob. This is a normal part of iPhone 4 local restores via TinyUmbrella. 1

Error 1013
Restart computer; change computer; reinstall system, if iPhone is always in restoring mode: XP users can jump from restoring mode with ibus; MAC users can use iNdependence. (usually on the iPhone with 1.0.2 firmware downgraded from 1.1.1)


For all errors check this

http://uberant.com/article/all-itunes-error-solved/