Originally Posted by Loobs72:
“I don't think I have installed the software update at all and it isn't showing in the list so do I need to do this? I really want to avoid losing all my wifi passwords if I can.
Did you get yours updated in the end?”
Yes, I've been able to now. I followed steps in section 4 of that link I gave you. I deleted the downloaded iOS 9.3 yesterday. After I did this I checked for updates and interestingly it told me there weren't any, yet my iPad was still running on the old iOS 9.2 whatever it was. I think that's because Apple pulled the update because of problems.
Anyway, I've re-downloaded the update this evening and it's installed ok.
At no point did I have to change wifi passwords. I did need to put my iCloud password in though to activate iOS 9.3
Hope that helps.