Download the apk file from this link!!
Install the apk file and and open it switch on your wifi or data and let the app download the 1400 or 1500 mb !
When the processing will complete
Just enter what they ask!
After that app will say update the app and when you click to update there will be no update!
So you need to follow this step!! When app will say update and will not allow you to play!!
1) close it from recent app
2) turn off wife or data
3) open app setting and asphat 8
4) clear the cache memory
5)dont connect to internet now while playing asphalt 8
6 now open asphalt 8 and buy all the cars and upgrade it
Enjoy a ride!!
For further query