• It came with the bike / new out of the box. I guess they tested it fairly rigorously in the factory? It's fine now so just came empty.

    I'm more interested in the Garmin connection to show battery & gear but also interested in ability to update firmware or customise shifters as I change my cassette every now and then.

  • Presume you just pair your Garmin with D-Fly.

    I've never updated Di2 firmware on either of my race bikes. If it ain't broke..

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