[How To] Install iOS4 Gold Master Beta (MAC Only)

Are you one of the people who can’t wait to get into the iOS 4 goodness that Steve Jobs brought announced in his keynote? We have good news for you! You can now get your hands dirty thanks to the power of the internet. The only problem is that you need a Mac to pull off what we are about to describe. If you have a machine with the Mac OS X on it, read on! The reason you need a Mac component is because iTunes 9.2 is required, and that iTunes build is Mac only. Sorry Windows users, step aside! You dont need your UDID to execute this installation, which means Apple should not be able to do anything about the steps we are about to walk you through.

Warning:

• This guide is for Already jailbroken iPhone 3G users only. and works on Mac OS only.
• These are not Officially released by Apple.
• If you’re new to the game or do NOT know what you’re doing, better wait for the official release.

Disclaimer:

• This guide is for testing & educational purposes only.
• We are not responsible for any loss of important data or malfunctioning of your device.

Guide To Install iOS 4 Gold Master:

Step 1.

Download and install iTunes 9.2 (Mac only, download links here, here, or here).

Step 2.

Download the iOS 4 Gold Master firmware for your device and save it on your desktop:

• Download iPhone 3GS firmware here
• Download iPhone 3G firmware here
• Download iPodTouch 3G firmware here
• Download iPod Touch 2G firmware here

Step 3.

Now install iOS4:

• Plug in your iOS device, and then tab over to iTunes.
• In iTunes, alt+click on the ‘restore’ button, and then when promoted to locate the file select the IPSW file we just moved to your desktop.
• Wait for between 10 and 15 minutes for the new OS to be moved over.

Just a word of warning that this isn't condoned by Apple, so if something goes wrong, don't expect them to help out. We can try to help out the best we can, if anything goes wrong for you drop us a comment and we'll try to help. Have fun experimenting with the new features! Who wants to wait until June 21st anyway?!

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