not confirmed working? just a hunch
If rooted:
With system.img; edit /system/build.prop
You'll see two dpi entries; probabky set at 180 that you can change.
With system.sfs use resolution changer app or #wm density 240 in terminal
1st Go to setting then Open Update menu
then Select Option top right corner and
then Click Radio button on Stable Version
then OK And restart your PC
Now your successfully get Original Resolution...........
Now your successfully get Original Resolution...........v