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As you know by now, iOS 8 GM download links are live for iPhone 5s, 5c, 5, 4S, iPad 2 and over, iPod touch 5G on Apple’s Dev Center. Apple unveiled iOS 8 to the world for the first time at WWDC 2014. iOS 8 brings a ton of new features to supported devices. More information on the features new in iOS 8 can be found here.

The following guide will help you download and install iOS 8 GM, that Apple announced today at the iPhone 6 event, on your device the right way. It is important to note that iOS 8 is compatible with iPhone 5s, iPhone 5c, iPhone 5, iPhone 4S, iPad Air, Retina iPad mini, iPad mini 1, iPad 4, iPad 3, iPad 2 and iPod touch 5. iPhone 4 is not supported. More info on whether or not your device is supported by iOS 8 can be found here.

iOS 8 download and install

Note: iOS 8 GM (Gold Master) build is likely the final build that Apple will release to public next week, and it doesn’t require any UDID being registered. The UDID registration step mentioned below if for reference only. 

How to download iOS 8 GM and install it on your device the right way:

Before you begin installing this latest build, you must make a complete backup of your device either via iTunes or via iCloud.

Ready? lets go!

Step 1: Sign up at iOS Dev Center: developer.apple.com/programs/ios/

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It will set you back a hundred bucks but its totally worth getting if you are into testing latest and greatest from Apple before anyone else.

Step 2: Once you have signed up, sign into iOS Dev Center https://developer.apple.com/devcenter/ios/index.action using your Apple ID.

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Step 3: You will now need to find and register the UDID of the iOS device you want to install this build on. The easiest way to find out the UDID is to plug your device into iTunes, selecting it, and then clicking on the serial number for it to show the UDID, as shown in the screenshot below. Simply copy this number by ctrl+c on Windows, or command+C on Mac.

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Step 4: Now head over to developer.apple.com/account/ios/device/deviceList.action to register the UDID as shown in the screenshot below.

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Step 5: Now on the developer portal, switch to iOS 8 section, scroll down and download the required iOS 8 GM firmware for your device.

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iOS 8 download

Step 6: The downloaded file will be in .ZIP format. Simply extract it to get .IPSW file.

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Step 7: Once you have the IPSW file, launch iTunes (make sure you are on the latest version). Connect your iOS device to a Mac or PC.

Step 8: Now on Mac, hold the Alt key (on Windows PC, this will be the Shift key), and click on the Restore iPhone… button. iTunes will then allow you to select the .IPSW you extracted in the previous steps. Select it.

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Step 9: Now sit back and relax as iTunes installs iOS 8 on your device. This should take a few minutes. Once done, you will be all set to go on the latest iOS 8 build.

Update x1: Apple has now released iOS beta 2 download links for all the supported devices. The guide above, which was originally written for beta 1, has now been updated for beta 2.

Update x2: iOS 8 beta 3 download is out. The article above has been updated to reflect this change.

Update x3: Apple has released iOS 8 beta 4. The tutorial above has been updated with changes where necessary.

Update x4: iOS 8 beta 5 is out.

Update x5: iOS 8 GM is out. The article above has been updated.

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