Update instructions for iOS 4 Golden Master

Yesterday at the opening of the Worldwide Developer Conference (WWDC), Steve Jobs, in addition to the new iPhone 4, introduced a new firmware called iOS 4. For developers, the Golden Master version of this firmware is already available. All other users will be able to download the new firmware on June 21.

What does the Golden Master version mean?

This is the software version that is sent to production and installed on all new iPhones in the factory. Usually, GM-versions of firmware appear one or two weeks before the start of official sales of new phones, because just so much time is needed to put new devices from the factory. Also during this time, developers have time to test and, if necessary, fix their applications so that they work well with the new software version. Therefore, Golden Master can be considered the final version of the firmware.
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What if I want to install Golden Master iOS4 today?

If you are using iPhone 3GS or 3G, iPod Touch 3G or 2G, then you can install the new firmware today. Because This is the final firmware, not beta, it is not necessary that the UDID number of your phone or player be added to the developer account .

Installation Instructions

Attention! Only owners of officially unlocked iPhone 3GS and 3G and second and third generation iPod Touch (2G and 3G) can be updated. If you bought your iPhone in Russia, Italy, Hong Kong and the Czech Republic, you can safely install this firmware. If you have a phone from America or other countries where it was sold sold to the operator and you are dependent on unlock, do not upgrade in any case! Wait for the release of unlock, otherwise the phone will turn into a brick.

If your phone is officially unlocked, but there was a jailbreak, when switching to a new firmware, the jailbreak will fly off. Usually, all the programs that you have installed from Cydia or Icy disappear.

1. Go to the site GumballTech and download iTunes 9.2 and the desired firmware version. iTunes 9.2 is currently available only for Mac. Without it, the new firmware on the phone or player will not be installed. If you do not have a Mac, and you really want a new firmware, look for a neighbor nearby.
2. Install iTunes 9.2.
3. Sync your iPhone or iPod Touch with iTunes so that your computer has the latest data.
4. Press Alt + Restore (Alt + Reset) , select the desired firmware and click Restore (Reset) .
5. In order to avoid glitches, we do not restore the iPhone or iPod Touch from backup, but synchronize it as a new one.

Use on health!