I got s8+ in dubai duty free and brought this phone to Russia and Samsung pay saying it's only available in the UAE.. I mean can't Samsung just make it works on any supported country? why should we have to stay in the same country just to use Samsung...
I think to change the firmware of the device to official Samsung of a supported country your phone Spay should work. but the issue I'm not sure is if it will trip knox.. coz if its does say bye to Spay and secure folder.