Increasing volume with Atmos yes, but not the overall quality in my opinion. It works fine with some songs and movies but there is particular songs that sounds plastic to me with Atmos. I had to turn it off to get a decent and more realistic feel to listen those particular songs.
I'm personally not satisified listening music with this phone as much as listening with my PC, which has only onboard sound chip but it gives the power of my Hybrid Pro HD. But I think Mi 5S has something like loudness equalization and more different bad effects. There is some songs that you can...
I tried to install again but unfortunately got the same result. Finally I've just checked the MD5 and it didn't match up, which means the ZIP was corrupted as @alan0ford mentioned. Downloaded the file again and the installation is done about a minute :) Thanks!
I was using the latest MIUI 9.1 - 7.12.14 Beta ROM. I decided to flash the latest MIUI 9.1 Stable ROM without wiping any data ant it stucked at this screen over 30 minutes:
So aperrantly it got stucked probably that I didn't wipe any data before flashing the ROM because I didn't want to lose...