Required -:
• Custom Recovery Like Twrp recovery or CMW recovery (If You Don't Know how to install custom Recovery then google
"[How To Install TWRP Recovery on [Your Phone Model]"
How to install Dolby atmos on your android -:
1) Firstly Install Dolby Zip File From Xda page [ Click Here ]
2) Now Press "Volume down + Power key" at Same time and go to your Recovery
(You need Custom Recovery try TWRP recovery or CMW recovery, Stock recovery maybe not work)
3) Now Flash The Zip File By Your Recovery
4) Now Reboot Your device
5) That's It, You Have successfully Installed Dolby Atomas On your android device
6) Now change your phone sound quality by Dolby atomas.