Getting Killer Wireless-AC 1535 working for installing Ubuntu 16.04
Solution 1:
Please try the newer firmware package. With a working internet connection, please open a terminal and do:
wget http://mirrors.kernel.org/ubuntu/pool/main/l/linux-firmware/linux-firmware_1.161.1_all.deb
sudo dpkg -i linux-firmware*.deb
sudo modprobe -r ath10k_pci && sudo modprobe ath10k_pci
Your wireless should now be working.