What is a BlueGiga Dongle? Philip Cowles March 30, 2018 17:06 Follow A BlueGiga Dongle adds Bluetooth 4.0 support to PCs for device connectivity and for firmware updates. Related articles Do I need a BlueGiga Dongle to update my smart trainer’s firmware? Does this ANT+ stick work with Zwift? How do I update the firmware on my smart virtual trainer? Which Virtual Training Applications Are Compatible With Cycleops? Do I need this stick to do firmware updates? Comments 0 comments Please sign in to leave a comment.