Everything installed but "Unabled to load device"

SDK is Connect IQ 8.3, Device is fr165. Win 10, java 25.

I followed the official manuscript to build an initial watchface, and once managed to launch. But some hours later, after running without debug in vscode the simulator is launched, and "build successful" in terminal, but comes with error "Unabled to load device: fr165". I swear i did nothing to this project.

The only output in debug console is "Failed to launch the device: Timeout".

How to find the cause and solve?