iOS 5 has just been released by Apple. The hotly anticipated update brings a variety of major new features to the iOS platform, including Notifications, iMessage, wireless syncing, iCloud support, Twitter integration, Reminders, in addition to over 200 overall feature updates or enhancements.
You can update to iOS 5 through iTunes, plug in your device and launch iTunes and you will get an update notification. Be sure to backup your existing iOS installation before proceeding.
Download iOS 5
Other than updating through iTunes, you can also download iOS 5 IPSW directly from the links below and install the firmware manually.
Build number is 9A334, these links are hosted on Apple’s servers, if you are having trouble downloading IPSW, right-click and choose “Save As”.
Apple TV 2 has also been updated, but is technically on iOS 4.4 with a custom build of 9A334v.
iOS 5 is compatible with iPad, iPad 2, iPhone 3GS, iPhone 4 CDMA & GSM, and iPod touch 3rd and 4th generations. iOS 5 also marks the first time that the CDMA and GSM builds of iOS are the same version. All new Apple hardware including iPhone 4S will ship with iOS 5 pre-installed.