Deleted iOS 9.3 update file I was having a lot of trouble installing iOS 9.3 on an iPad Air and after a bit of searching around I was advised to delete the update file and try to reinstall. 

Having done this, I no longer have the option to try again. When I check for a software update I am notified that I am 'up to date' with 9.2.1

How do I get back the option to upgrade to 9.3?

Any help is much appreciated.
Apple yanked iOS 9.3 for almost all devices which means you can't install it.