Hey guys. I updated my Mi box S to Android 9 by going into recovery and downloading from a external drive. When the update finished, it indicated in the top left that I was on 9, but when I try to "reboot system now," it pops up with the Mi logo and boots you back into recovery after about 25 seconds. I've tried so many things like going back to 8.1(which failed) and many other things on the internet, but nothing works. I really love this box and would hate to see it go. Any ideas?
Looks like you didn't wipe data before applying the update, follow the instructions provided here .