Since Google Camera with HDR+ was ported already, it requires that camera2api to be enabled.
This is done by editing build.prop to add or enable "persist.camera.HAL3.enabled=1".
This mod only adds camera2api support in the build.prop s...
Edit: it seems like hdr+ isn't really working.
The latest mod from BSG works on our Axon 7 already.
Here's the link: MGCB_7.0H_C2API_Mid_v.3.6_AllinOne_Full_Manual.apk
Also, you still need to enable camera2api for this to work.
This is for Marshmallow B13. However, I can confirm that installing twrp using tenfars tool still works even on latest B17 nougat or B08 mifavor 5.
However, some users don't have luck with it.
I advise to check first on Axon Toolkit located her...
From our friends at 4pda, here's the update to 7.1.1 B09 to B10.
Requirement must be on stock 7.1.1 already.
I have been reluctant to root so far as everything just works fine and sacrificing the 3 year warranty was a bit steep on a phone like this but I would do it right away,if HDR+ was confirmed to be working... I would even travel back in time to ret...