Recommendation: Always download your first data with the battery inserted, as the connection works with a normal USB-C interface.
Boot up the BLK360
Connect the BLK360 to a USB-C Thunderbolt interface via a USB C cable
Create a PinPoint Registration project using the Create button
Import data via File-->Import-->BLK360 G2 import.
If the transfer works with the battery, try the transfer without the battery inserted.