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hi,to update your ipad ios operating system, you would need a computer and itunes software.go here to download itunes software if you havent already install on your computerhttp://www.apple.com/itunes/now follow the step below to update your ipad software.1. plugged ipad into the computer (usb port)2. open itunes software on your computer3. select your ipad name within itunes window under Devices4. on the summary tab click the update button.5. after update completed, you can now login app store and download your bookyou can go here for picture instruction --->> http://support.apple.com/kb/HT4623make sure to expand " update your device using itunes" for instruction.Please let me know if there is still any issue. Thank you.If you would like any additional information or have more questions please don't hesitate to ask!