How to Update iPhone 4/3GS/3G to iOS 4.2.1

Apple has Finally Released ios 4.2 for all and now its available for Download you can also directly update to the ios 4.2.1 from itune, we have already posted about.

Download iOS 4.2 for iPad, iPhone, and iPod Touch

ios 4.2.1 is supporting iphone 4, iphone 3GS and 3G and If dont know that how to update it then Follow the below Given step by step information to update your iPhone 4/3GS/3G to iOS 4.2.1.

How to Update iPhone 4/3GS/3G to iOS 4.2.1:

Step 1 : First you have to Download latest Version of itune.

Step 2 : Now connect your iphone to computer via USB

Step 3 : now sync iphone with itune

Step 4 : as you will connect your device to itune it shows latest ios 4.2.1 update message

Step 5 : Now Click on Download Update Button

Thats it Now your iphone is Updated with latest version of ios 4.2.1.

Stay tune with US for more How to guide on ios and iphone,ipad and ipod touch.