Error 1403 while upgrading to firmware 2.2

[saifeeab]

Hi guys. I currently have firmware 2.1 successfully working on my iPhone & I have been trying to upgrade my firmware for quite a while now but i keep getting error 1403 in iTunes. I have tried everything i cud possible but no success so far. I even put my phone in DFU mode and then tried to restore but even with that i still get the same error .
some1 pls help. this has become quite frustrating now.

P.S.: I have updated my iTunes to 8.0.2

[captainjapanicq]

This error means that your ipsw file is corrupted. If you downloaded it from the net, try downloading it again.

To check if it is corrupted, rename the extension to .zip and open it with winzip.
If it doesn't open/extract, it is corrupted.

[saifeeab]

^^ Thanx. but my iTunes is the latest 8.0.2. My itunes always recognizes my iphone and sync apps and all other stuff properly. over the past year i have been upgrading firmware from 1.1 all the way to 2.1 now. it is only this time that any such error message is coming up and i am completely unable to solve it.

[Poseidon79]

You're just trying a regular restore right? Not a restore to a custom 2.2 firmware?

[captainjapanicq]

Corrupted ipsw file.

[saifeeab]

Corrupted ipsw file.

i thot so too. so i downloaded the ipsw from 3 different sites. all with the same result.

You're just trying a regular restore right? Not a restore to a custom 2.2 firmware?

no customs. just a regular restore.

everytime i get the msg. "An unknown error occured (1403)"
P.S.: I have also tried re-restoring to 2.1 and then immediately updating to 2.2 on a clean phone. still the same error.

[smirkis]

open itunes n click restore n let it download the official firmware on its own

[saifeeab]

thanx all guys for ur suggestions. they say 3 times is lucky but in my case it was 6-7 times. after downloading the ipsw from almost 4 different sites i finally managed to download a firmware file which actually worked and i was finally able to update my iphone. YEH!!

i have no idea why but the firmwares on other sites (even reputed ones) were creating problems.

[Poseidon79]

Next time let itunes get it from Apple as suggested above.

[saifeeab]

Next time let itunes get it from Apple as suggested above.

actually tried that too. halfway thru the download itunes gave some download error message & cancelled my download . maybe bcos i tried to pause the download a couple of times...