• I’ve put together a di2 group for a second bike - It’s all external, 6770 shifters and junction boxes, 6870 front and rear mech - charged battery, cables plugged in - I was expecting the shifters to move the mechs (no chain/crank etc installed yet) but nothing... when I plug the battery there is a green light for a few seconds on Junction A - am I doing something wrong? am I being an idiot?

    Cheers in advance,
    Matt

  • Firmware needs updating. Good news is it's an easy job. Bad news is the eTube software you need is Windows only.

    And you'll need a computer interface. Which battery/Junction A are you using? If you're using the EW-67 Junction A you'll need a PCE1.

  • Problem solved - too many beers, I’d put the 6770 front mech on, replaced with 6870 and it’s alive!!

    Cheers all,
    Matt

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