Comment 9 for bug 1591167

> I applied the patched /lib/firmware/intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq as mentioned by @7oby in
> comment #4 on Ubuntu 16.04.3. No Joy. My control, is a newer:
>
> [ 9.468054] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210

actually AC 7265 has different firmware files than AC 7260. There are even two files depending on your hardware revision. I can't tell which one you have and therefore you may want to replace both:

Intel Bluetooth 7265 (D1)
/lib/firmware/intel/ibt-hw-37.8.10-fw-22.50.19.14.f.bseq
upstream : Release Version: 19.30 (2016/11/30)
Ubuntu 16.04.03: Release Version 18.15 (2016/01/11)

Intel Bluetooth 7265 (C0)
/lib/firmware/intel/ibt-hw-37.8.10-fw-1.10.2.27.d.bseq
upstream : Releaes Version 19.30 (2016/11/30)
Ubuntu 16.04.03: Release Version 18.15 (2016/01/29)

upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/intel

However from time to time the ubuntu linux-firmware package gets updated even for 16.04:
http://changelogs.ubuntu.com/changelogs/pool/main/l/linux-firmware/linux-firmware_1.157.11/changelog
Anytime you fetch those updates, your custom firmware files get overwritten and your patches have to be reapplied.