He found the SuperSU zip file—archived, abandoned, last updated years ago. The original developer had moved on, but the code was still there, like an old key hidden under a rock. He pushed the file over USB, then used a temporary recovery image he’d cobbled together from forum posts marked [UNSUPPORTED] and [USE AT YOUR OWN RISK] .

Essentially, you have the remote control (the app), but the TV (the actual root access) isn't turned on. Why is This Happening?