Apple just released much awaited iPhone firmware update, now known as iOS 4. Latest release of OS comes with lots of new features like multitasking, folders, unified mailbox, new wallpapers, threading in Mail, lots of enhancements in camera and photos, deeper enterprise support, , Retina Display integration for iPhone 4 and tons of new features everywhere.” and much more. In order to install iOS 4 on your iDevices you need iTunes 9.2, you can download offline installers of iTunes 9.2 for Mac and Windows here.
Following are the offline download links for iPhone 3G, iPhone 3GS and iPhone 4. It can be upgraded to in iTunes by holding the alt/option key (for Mac users) or shift key (for Windows users) while pressing the “Check for Update” button in iTunes, and selecting the downloaded IPSW on your drive.
- iPhone 3G IPSW Link: Download Here
- iPhone 3Gs IPSW Link: Download Here
- iPhone 4 IPSW Link: Download Here