In the iTunes update screen there are two options. One is download and update other is only download. If I download the file and try to update later then what would be the procedure ?

Thats how i did it, when i connected my ipad to the laptop, i gotb2 options, downloadnonly and download and install. I did download only, however i hadbproblems on the wifi, when i connected my laptop to the router with cable, the down load was quicker and successful. Then i updated the ipad later on, which was another hassle and stressful 😡

RIP Steve Jobs 