nothingacceptable, try this:"
Locate your hosts file, in Mac OS X this is /etc/hosts and in Windows c:\windows\system32\drivers\etc\hosts
Use word pad or notepad to open the hosts file with Administrator privileges
Add the following line to the very bottom of the hosts file:" #220.127.116.11 gs.apple.com "
if 18.104.22.168 gs.apple.com is already,\ in the host file you need to add # just before it #22.214.171.124 gs.apple.com
Restart your computer
Turn off windows firewall
Connect your iPhone to the computer and start iTunes
Place the iPhone into DFU mode by turning it off and then holding down the sleep and power button for 10 seconds, then release the power button but hold onto the home button until iTunes tells you that the device is now in recover mode.
Then hold shift click restore, point to the downloaded iOS firmware.
Hope this helps, good luck.