I\'m trying to debbuging my app on real device (lumia 830 with windows 10 mobile 10.0.10581.0) Developer Mode is ON on both devices (mobile and PC), but when i\'m trying to
I've faced similar problem few days ago. It turned out that Emulators and SDK version must match the Insider preview build on your device.
Try to download both of them: emulators and SDK from here, in my case it worked like a charm.
As for registering device for developement - it's not needed any more. Starting from Windows 10 all devices have 'developer unlock' in settings.