Ubuntu 14.04, Killer Doubleshot: Killer 1525/1535 specific firmware
My Computer: MSI GT72 2QD 292 XCN
sudo cp hw2.1/* /lib/firmware/ath10k/QCA6174/hw2.1/
sudo cp hw3.0/* /lib/firmware/ath10k/QCA6174/hw3.0/
sudo cp ath10k.conf /etc/modprobe.d/
Reboot