Hey all. I'm still running 8.1 on my 1520 and was wondering how many of you have really updated it to W10 mobile. I think I would like to but I wanted to to see if everyone here recommends updating or staying on 8.1. If you do recommend the update, do I need to reset this phone to original settings or can I just update direct from 8.1? I would appreciate your opinions and suggestions regarding this. Thanks all.