Apple's iOS 4.2 software update for iPad, iPhone and iPod touch is now available to download.

The update brings a range of new features to iPad users including multi-tasking and the ability to create folders to group favourite apps.

Additionally, the update adds AirPlay a new feature for streaming music, video and photos wirelessly, AirPrint billed as a next-generation Wi-Fi print solution, and the Find My iPhone function for finding lost of mislaid Apple devices.

Apple notes: "iOS 4.2 is compatible with iPad, iPhone 3G, iPhone 3GS, iPhone 4, second and third generation iPod touch (late 2009 models with 32GB or 64GB) and new iPod touch."

"Some features may not be available on all products. For example, Multitasking requires iPhone 3GS, iPhone 4, third generation iPod touch (late 2009 models with 32GB or 64GB) or later."

Users need to connect compatible iPhones, iPads or iPod touches to Mac or PC and follow the on-screen instructions in iTunes.

Apple iPad