How To Upgrade iPhone into iOS 5 GM (Gold Master)

Today Apple, Inc has been seeded to iOS Developer iOS 5 GM (Gold Master) and all developer able to download ipsw and applied on their iDevice. iOS 5 GM is different with iOS 5 Beta, so the developer needed to download manual iOS 5 GM ipswand using iTunes 10.5 Beta 7 or newer to applied it.

If you not developer and already register your iDevice (iPhone, iPad, iPod Touch) UDID you can upgraded too. Follow this step

1. Download iOS 5 GM (Many version and Device)
2. Backup your data into your PC/Mac or using iCloud (Apple Recommend using iCloud)
3. Connect your iPhone/iPad/iPod Touch into your Mac/Windows with iTunes 10.5 Beta 7 or newer installed
4. On your iPhone/iPad/iPod Touch in iTunes click restore with hold option button and choose your downloaded iOS 5 GM ipsw
5. Follow the step until it done.
6. You will be prompted that your iPhone/iPad/iPod Touch was ready, you can choose fresh phone or restore from you backup
7. That’s it, now you have successfully installed iOS 5 GM

If you have any question about this step, leave comment below.