I had 14295 installed on my 830 but it was way too buggy, wanted to go back to the previous build. I used WDRT to try and do this. Ended up back in 8.1. How do I get back to W10 to whatever build came before 14295?? I downloaded Upgrade Advisor and it says I'm eligible but doesn't start a download or anything, no updates under Phone Update in Settings. How can I get back to 10 quickly??