You'll have to remove one or more apps from your iPad to be able to update. There should be a link to your usage settings below the software update. When you tap it, you'll be directed to the right place to free up some space for the update. You'll be able to download these apps again afterwards.Yes I know I can see 1.1gb size. I push the apple icon as I done 7.1 and the previous updates but this time nothing happen.