mweinbach You may want to edit the OP that the Gear VR works now, atleast my Verizon S8 flashed to the 950U1 firmware. I am sure the 955U1 might work as well.
Download the firmware files from here:
Create a folder RM-937 under C:\ProgramData\Microsoft\Packages\Products\ and unzip/move all the firmware files to it. You should be able to flash using WDRT. If that...
Good to be back here after long time...and thanks for mentioning my tutorial anaheiim