Start Problem updating iphone 3g to 4 2

Problem updating iphone 3g to 4 2

If it's running i OS 6 unjailbroken then we can say it's not a 3G or an original i Phone, but we can't assume it's a 3GS—all we know is that the poster did not properly identify the model.

You can download i OS 4.2 directly from i Tunes 10.1, but if you’d prefer to use a direct download link, here they are from Apple: These are direct download links from Apple’s servers.

It’s best to right-click on the file and then “Save As” to prevent any problems downloading the IPSW.

That sounds a bit awkward, so here's an example: I have a 4th-gen i Pod. At one point I installed various Apple apps like Find My Phone/Friends.

I have i OS 6.1.6 and if I want to download "Find My i Phone", it requires i OS 7.

I also have about 10 GB of free memory out of 13 GB.

You can follow these simple step-by-step guide to bypass the 1604, 1603, 1602, 1601, 1600 errors: You should now be able to successfully restore your i OS device with the pre-jailbroken i OS 4.2.1 firmware file without hitting the 1604, 1603, 1602, 1601, 1600 error.

I've tried to search on what else I can do, but cannot figure it out.

If you hit a 1604, 1603, 1602, 1601, 1600 error while trying to restore your i Phone with a custom i OS 4.2.1 firmware file created using Sn0wbreeze 2.2 for Windows or Pwnage Tool 4.2 for Mac then there is a way to bypass the error.

i H8sn0w, developer of Sn0wbreeze has released a new version of i REB tool, which is compatible with i OS 4.2.1.

i REB is currently available only for Windows users.

Before we start please note that that jailbreaking your i OS device may void its warranty and hence proceed with caution and at your own risk.