Try to read this thread from post n2
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Unfortunately I'm on JB 4.1.2 so I dont have a personal experience installing it, so I tried to decode chinese forum posts, users added infos, but you should read the whole thread
BW and djeman, later, just made a version for non rooted phones, but the source is still the same : chinese user voodoo.
This app doesnt work on every Android phones, it depends on resolution and roms, must just patiently read, try and see.