Hi, I was on MiFavor 5.0 port to A2017G, and I wanted to return to 4.2. But when I installed backup, after boot it shows ZTE Logo, and then its stuck on "your phone has been unlocked" text. When I flash back to stock files thru TWRP it says that no OS is installed, and when booted it is stuck on that text as well. Can anyone help?