I did it as instructed:
To update the exercise videos, place the 006-D7892-00.zvp file into the \Garmin\RemoteSW directory of the device.
After disconnect the device from cable, beta FW was installed correctly, but zvp file is still in RemoteSW folder and I am not sure, if it was loaded. In other words I am not sure if the excercise videos were updated. How can I check it?