Apple has finally made the ios4 available as a update to all the iPhone, iPod & iPad owners. The iPhone owners who own the 3GS, 3G handsets can only get this stuff done because there is no support for older generation devices. You need to connect your device to the computer and run the iTunes application, and then under the Devices > iPhone > Version, click on the ‘Check for Update’ button which will display you a new box if you would like to upgrade or not.
Next once the update is started it would take from a few minutes to few hours to download the large upgrade following which the iPhone would be updated to ios4 Operating system which is powerful and built with awesome features. The next task would be enabling all the features and functions available in ios4 for which you will have to Jailbreak iPhone.
Note the following :
- iOS4 is available for iPod, iPhone 3G, iPhone 3GS only
- iOS4 can be upgraded only through iTunes 9.2 version only
- iOS4 upgrade ipsw file is of large size so make sure you are not on a 3G connection
If you cannot directly upgrade you can download the correct ipsw file and then perform the following steps :
- Launch iTunes 9.2
- Click on your iDevice under “Device” from the bar on left
- ALT+Click on “Restore” button
- Select the IPSW file you just downloaded for your device
- Sit back and relax for 5-7 minutes once your device restarts it will be running on iOS 4
Next lets once you have installed iOS 4 on iPhone 3GS, iPhone 3G, iPod Touch 3G and 2G you will have to proceed towards the Jailbreaking procedure. Previously we had discussed about the Jailbreak iPhone 3GS on iOS4 – Pwnagetool which worked for iOS 4 GM version but for the new released you need to perform the following. In order to Jailbreak iOS 4.0 on iPhone or iPod you need to download Redsn0w 0.9.5 Beta.
The current release of Redsn0w 0.9.5 Beta 5 is currently available for the first official release of iOS4 and cannot be used in the later versions, but for sure there would be new unlocking options available as soon as new updates are launched. The Redsn0w 0.9.5 Beta 5 is released by iPhone dev team and is still in beta, which also required Cydia to reload, reorganize and update all the apps after jailbreaking using Redsn0w.
Once you have successfully jailbroken and unlocked your handset to run on any cellular network, you need to configure the OS to Enable Multitasking, Folders and Wallpaper on iPhone 3G.