You should be able to just factory reset. Seems you just boinked your system file (forgot the name).
Look up YouTube's videos how to factory reset your device during boot.
If you knew what you were doing, you should be able to put the phone in download mode and push a stock [system file] and recover it without a wipe. But wiping is easier and faster.
For the record, I used Tex_Provider from the Play store to change my DPI to 400.
Sent from my VS980 4G using XDA Premium 4 mobile app
Last edited by player911; 29th March 2014 at 01:25 PM.