Do not miss your iOS 5 updates with the latest IOS for iPhone 4, iPhone 3G, iPad 1 & 2 iPad, iPod touch upgrade to 4G and iPod Touch 3G.
You can use the 5-IOS firmware update from official sources as a link below to download:
Please note that iTunes 10.5 iTunes software upgrade before installing iOS 5 to your device. To update iTunes to 10.5, you can either Apple software updater on Mac or Windows, and then install the available updates, or you can download at 10.5 from iTunes: -
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