It took me a while to install properly the driver for the Killer dual band Wireless 1525. There are apparently different versions of it and some of the instructions online do not work with my version.

What I did:
– I put the newest driver available on this site in my /lib/firmware/ath10k/QCA6174/
– I noticed that although I have a “1525” the kernel was trying to load the driver from the hw3.0 instead that from the hw2.1
– I made a

ln -s firmware-4.bin firmware-5.bin

in the hw3.0 directory as the kernel was looking for firmware-5.bin.
– At this point the driver loads but I had the problem that it just says: “failed to enable adaptive qcs: -11”. You can now read in the log “ath10k_pci 0000:03:00.0: qca6174 hw3.2 (0x05030000, 0x00340aff, 168c:003e…”. Which might explain why hw2.1 and hw3.0 do not work.
– I got the file “/Windows/System32/drivers/eeprom_ar6320_3p0_NFA364xp.bin” from Windows 10 and I put it into the hw3.0 directory calling it “board.bin”.

The wireless finally works.

Update: with kernel 4.5.2 and following this instructions the wifi works fairly easily.