I figure out the answer , to run apps in gear vr , you must have signature file for used device by get device id & use site below
after you get the file , you should put inside your project in this directory
YourProjectName --- > assets --> Plugins ---> android ---> assets
(notice if you don't find this directory make sure your build platform android , from build setting -- > switch platform)
then what you if you get this error
why this error happen ??
when I work in project I copy signature file with its meta file
so to fix error , just copy signature file without its meta file
hope this be helpful & sorry for my bad English
how you can get device id ?
there many ways to approach that but best way to write in terminal
You should see a list of attached devices like this:
List of devices attached ce0551e7 device
or if you are lazy like me use this app its working very well it called SideloadVR DeviceID