iOS 4.2.1 Update
What's the point of having the latest gadget without the latest software? Be sure to update your iPad to the current software in order to enjoy the latest Apple upgrades, such as multitasking, folders, AirPrint, Find My iPad — and our hot-off-the-Pad app: Splashlight studio tour! How to check your software version 1. On your iPad, tap Settings, then General. 2. On the right side, note the version. It should be 4.2.1. 3. If not, you're cheating yourself out of a lot of great features.
Updating to iOS 4.2.1 automatically via iTunes 1. Download iTunes 10.1 from here. 2. Connect your iPad to the computer. 3. iTunes shows an iOS 4.2.1 update message. 4. Click the “Download and Update” button to update iPad to iOS 4.2.1.
Note that Apple won't let you download apps larger than 20 megabytes over 3G. You need a WiFi connection or an iTunes download that you sync that big ol' app to your iPad.