Help updating iphone 4
If you are unsure of the type of i Phone, here is how to check if an i Phone is a GSM or CDMA model.Use that information to download the appropriate IPSW for the device.Now restart the i Phone 4 and try using your data plan, it should work perfectly.You may want to temporarily disable Wi Fi on the i Phone to be sure that your are using the data network and not Wi Fi while you test this. No problem, setup an i Phone 3G or 3GS as a pre-paid i Phone, it’s even easier since you can just swap sim cards directly!Greenpois0n untethered jailbreak does NOT require SHSH blobs for i OS 4.2b3.
Any i Phone IPSW files that you have already downloaded from i Tunes are stored locally on your machine.
You can access these directly at the following locations: Mac OS X: ~/Library/i Tunes/i Phone Software Updates Windows XP: \Documents and Settings\username\Application Data\Apple Computer\i Tunes\i Phone Software Updates Windows Vista & Windows 7: \Users\username\App Data\Roaming\Apple Computer\i Tunes\i Phone Software Updates The IPSW acronym is thought to stand for i Phone Software.
IPSW files are essentially just packages to deliver updates to your i Phone, i Pad, and i Pod touch including the baseband and firmware.
Here’s the direct download links for all of the i Phone IPSW firmware files from version 3.0.0 on up through 6.1.0 for i Phone 2G, i Phone 3G, i Phone 3GS, and i Phone 4, 4S, or 5.
Note that we are not hosting the files, they are direct links to Apple’s web servers.