When I start Android Studio, it shows popup regarding new update of 1.1 release. But when I start updating, After downloading all patch files, while restarting, it shows fol
I have had a similar issue and solved it. Some documents were encrypted by the software installed on my PC, so updating to Android Studio 3.6 was not possible (in fact every update I have the same issue).
To solve it, just find those files in the Android Studio installation folder (probably Program Files/Android) and decrypt it. After that, you should be good to go. I hope it helps!