I haven’t seen a lot of information posted about how to do software updates with Shimano Dura Ace 9070 DI2. Here is a quick howto:
- Download the latest version of the E-tube Software
- Install the software on Windows (Mac users can use VMWare Fusion or Parallels.
- Launch the application.
- Connect the SM-BCR2 to the charging port on the junction box. The cover might be difficult to open, I had to use a screwdriver.
- Plugin the SM-BCR2 to your computer
From there is pretty straightforward. The software will update itself and then detect if there are updates for firmware on the various components. Below are a series of screenshots.