How to install iOS 8 on iPhone 4s

Listed below are the steps to install iOS 8 GM build on iPhone 4S. Please make sure to backup iPhone 4s before executing the below mentioned steps.

Step 1: Login to and access Member Center

Step 2: Navigate to iOS section under Dev Centers


Step 3: Select iOS 8 GM Seed then click iPhone 4s under iPhone section. This should start download the iOS 8 for software for iPhone 4s on your Mac


Step 4: Once the file in downloaded and extracted on to your system (, Launch iTunes, navigate to iPhone 4S then click Check for Update holding option button on your keyboard.


Step 5: Select the iOS 8 restore for iPhone 4s and click Open. This should display the following message on your iTunes screen.

Step 6: You should notice Extracting Software, Preparing iPhone for Software update and Updating iPhone software messages.

Finally your iPhone 4s will be upgraded to new iOS 8.

In Category: Apple, iPhone

Ravi Shankar

A Software developer and blogger who is always looking to provide technical help to the wider community.

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