Apple has made the final version of iOS 4.0 available for iPhone 3GS, iPhone 3G and iPod touch users to download via iTunes. You need to have iTunes 9.2(latest version) to download the firmware released. The firmware’s arrival was announced at this year’s WWDC with iPhone 4.

Previously known as iPhone OS, the updated version of Apple’s mobile operating system has over 100 new features. The main features include multi-tasking, ability to group apps into folders, home screen wallpaper, and much more. All features will be available for iPhone 4 and iPhone 3GS users, but for iPhone 3G and iPod touch users multitasking and home screen wallpapers will not be available, unless you really force it out of the iOS 4.0. Similar update for iPad users is expected soon.

Plug in your device to iTunes and update it to the latest firmware!
Official download links for iOS 4 :
Tip: For those users, who depend on jailbreaking and unlocking their device, it is recommended not to upgrade their, unless there is an jailbreaking tool from iPhone Dev team available for your device.
Make sure you check out :
Suggested reading:
Apple has released iOS 4.0.2 for iPhone4, iPhone 3G and iPhone 3GS users. The newly released iOS patches the Safari's PDF exploit that was used to jailbreak iPhone on iOS ...
READ MORE
Apple has pushed an update to its developer version of its latest firmware for iPhone 4, iPhone 3G/3GS and iPod Touch. This is an update to the iOS 4.1 first ...
READ MORE
In an update to iOS 4.0, which may be the possible fix to much talked iPhone 4 antennae issues, Apple has released iOS 4.1 first beta. The firmware update is ...
READ MORE
While there is redsn0w 0.9.5 to jailbreak iOS 4.0 on iPhone 3GS/3G and iPod Touch 2G for both Windows and Mac OSX, and the recently released PwnageTool 4.01 does the ...
READ MORE
PwnageTool is yet another famous jailbreaking tool from iPhone Dev team, to jailbreak your device on Mac. Dev team has released PwnageTool 4.01 to jailbreak iOS 4 (iPhone OS 4) ...
READ MORE
The day when comex released JailbreakMe to jailbreak iOS4.0/iOS 4.0.1 on iPhone 4, planetbeing promised to come up with the carrier unlock ultrasn0w for iPhone 4 iOS 4.0.1 within 48 ...
READ MORE
In a few hours from now, Apple will be holding a press conference regarding iPhone 4 related updates and issues. The news has gone viral and everyone wants to be ...
READ MORE
Apple has released iOS 4.1 beta for developers as a possible fix for antennae issues related to iPhone 4, but in reality, the firmware upgrade is not enough for to ...
READ MORE
Apple Patches PDF Exploit with iOS 4.0.2 Release
Apple Releases iOS 4.1 Beta 2 to Developers
Apple iOS 4.1 Update to Fix iPhone 4
Sn0wbreeze 1.6.1 to Jailbreak iOS 4.0 on iPhone
PwnageTool 4.01 to Jailbreak iOS 4.0 on iPhone
Ultrasn0w Carrier Unlock for iPhone 4 iOS 4.0.1
Apple iPhone 4 Press Conference: What to Expect,
Jailbreak iOS 4.1 Beta on iPhone 3G and
Article by Sahil Malhan
Sahil Malhan is a part-time blogger with really strong passion for his work. He considers Blogging as the best source of self education. Follow him on twitter @sahilmalhan. Subscribe to feed via RSS Follow us on twitter @techtickle
Sahil has written 303 articles for us at TechTickle.