1.Install and run Asphalt 8: Airborne. Exit game and close from multitask.
2.Download Asphalt 8: Airborne hack from the link given below.
3.Unzip Asphalt 8: Airborne hack file.
4.Connect your device to your PC/Mac
5.Open up iTools/iFunbox, copy the file “Asphalt8” to var/mobile/Applications/Asphalt8/Asphalt8.app/
6.Overwrite existing file.
7.Set permissions to 777 to the file ” Asphalt8” using iFile if the game keep crashing.
8.Reboot your device if you did step 7.