1. Just download this file to you PC 2. extract from ZIP 3. connect your phone to pc via USB cable, Press "mass storage" on the screen of your phone 4. transfer folder named .N9QTweakBackup (that you extracted) from your PC to your phone (override or delete your existing folder with the same name). 5. Now, Open N9 Qtweak -> go to tweak X (just press X, then enter) 6. Choose option 2 ((just press 2, then enter) 7. Check your conversation app