apple,  ios,  ipad,  iphone,  ipod,  itunes,  touch

How To: Upgrade to iOS 4.2.1

Apple’s iOS 4.2.1 software update that was rolled out today is a nice tweak for iPhone and iPod touch users already running iOS 4.0 and a huge leap forward for iPad owners.  This guide is intended to help you make the jump to the latest iOS release for current model iPhone, iPad, and iPod touch.

Step 1: Install iTunes 10.1 on your Mac or Windows PC if you haven’t already done so.  (Use the Apple Software control panel to check for the iTunes software update.)
Step 2: Connect your iDevice to your computer to sync your data and back it up.
Step 3: Select your iDevice from the iTunes “Source” list.
iTunes 10.1 Devices Source List
Step 4: Click the Check for Update button.
Click the Check for Update Button
Step 5: Click the Next button to begin the upgrade process.  Follow the on screen directions.
Click Next to Begin the Install Process