not able to update to 5.1.1

[hashir3]

i tried to update to 5.1.1, itunes says , the iphone cannot be restored at this time because the iphone software updtae server could not be contacted or temporarily unavailable.-------- i treid diff usb ports, updated lated itunes , tried in dfu mode still getting this plzz help, need to update to 5.1.1 for battery reasons

---------- EDIT ----------

74.208.105.171 gs.apple.com

changing the host file did help me

[COLIN910]

If your jailbroken you need to restore not update!

[SullyDigital]

i try to restore my phone but when im extracting the update, an error pops up.

[COLIN910]

Have you used iReb DFU?

[Veer]

same here, i cant restore to 5.1.1. i tryied ireb, but same problem.

but now my restore work to ios 4.1. then i will try to upgrade again to 5.1.1

[sailenyau]

DFU + custom firmware will do.