To use this patch you need a decrypted game, you can follow this tutorial on decrypting it.
To uninstall it, just re-download the app from the appstore or re-install your legit decrypted version (the one you decrypted).
Just a warning, it may slow down the game a bit, so do be careful. I have not found any triangle bugs like the Android version, the only bug I have spotted is sometimes it causes the shadows in water to have sharp edges but still have smooth shading.
Download (mediafire) YOU MUST PUT THIS FILE IN: /usr/bin/