Updating IOS on IPAD
How do I update IOS on an IPAD?
iPad, iOS 4.3
How do I update IOS on an IPAD?
iPad, iOS 4.3
Assuming you have iOS 4.3 as your tagline suggests. You'll need to connect your iPad to a Computer running iTuines (Can be a Mac or a Pc doesn't matter) and follow the update prompts.
You'll probably want to back up the iPad before updating though.
iOS: How to update your iPhone, iPad, or iPod touch
Scroll down to the section titled: Update your device using iTunes
you need to do it via iTunes on a computer.
from iOS 5 you are able to update from the device directly.
Updating IOS on IPAD