I recently purchased Gear VR and run it with Samsung Galaxy S6. l run on Windows 10. I have had a more than difficult time trying to get everything to work. I have included the osig signature file under the “plugin/android/assets” folder and in addition to installing the latest version of unity and reinstalling all the suggest programs have ended up less than successful. I have debug enabled my phone and when the phone is directly connected via USB to my computer the phone is accessible; but when I connect my phone to the Gear VR and then connect the Gear VR to the same USB cable the device is not recognized. “The last USB device you connected to this computer malfunctioned and Windows does not recognize it.”
Make an ordinary, simple, (non-VR) Unity project … just make some cubes and have them spinning
Have you tried building that through from your Windows10 box, through to your Samsung Galaxy S6?
Does that work perfectly?