build.prop Editor v2.0
I'm not responsible for any problem caused by editing the build.prop file. I've tested the app and haven't bricked my phones.
Requirements: This app is compatible with 4.0 or newer and of course needs root access to write to your Android's /system directory.
If you have any issues or feature requests (or just want to be awesome and contribute to the project) head over to GitHub and open a new Issue.