Apple is due to officially release its latest operating system, iOS 6 Golden Master, on Sept. 19, but registered developers have already downloaded the software to iDevices.

A list of supporting iDevices, along with a step-by-step guide to download the latest iOS6, appeared on a Web site called Lifehacker.

"We updated a handful of iDevices using these files and encountered no issues, but because we're unable to verify them all we don't know problems won't arise. This process worked for us when we tested with an iPad, and iPod touch, and an iPhone, but there's always a chance you could run into an issue. Please be aware that there's some risk involved before you upgrade," reported Lifehacker.

Developers will have to manually download the package from Apple's Dev Center and then, unlike previous over-the-air (OTA) updates, install it using the latest version of iTunes.

"This is likely to be exactly the same build that is released on September 19 - providing no major issues are discovered in it - so once you've installed the GM, you won't see an update next week," claims TechnoBuffalo.

Apple's latest Xcode release, version 4.5, will also be available for download via the Dev Center.

The new iOS 6 Grand Master is expected to be an improved version of the older operating system software. iFans will be eager to download the software even before an official Apple launch.