di2 problem, firmware update BT-DN110
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  1. #1
    RoadBikeReview Member
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    di2 problem, firmware update BT-DN110

    Hello All!
    It's not a new problem but I cannot find right solution. I read hundreds of posts about it and I still don't know what to do.
    After 2 hours of upgrading firmware of BT-DN110 (3% progress!!!) I interupted it. Of course like in many other case system is not working at all.
    I connect it to E-TUBE from my PC but no device was found. Nothing.
    When I disconnect battery it works fine and finds all the stuff.
    Only when battery is connected System is unrecognizable.
    Is my battery is broken? Can be unblocked only with PCE1? Is any other solution?

    My configuration:
    EW-RS910
    EW-WU111
    FD/RD-R9150
    ST-R9170-L & R
    BT-DN110

    Thank you for any help

  2. #2
    RoadBikeReview Member
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    Problem solved. Battery unlocked with PCE1.
    Bartek

  3. #3
    RoadBikeReview Member
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    Yep PCE1 is the only way to unbrick a battery that is bricked by the mobile app. The mobile app leaves much to be desired. Unfortunately it is the only way to update the Di2 wireless units.

  4. #4
    RoadBikeReview Member
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    A year later and once again the iOS E-Tube app bricked the Di2 battery while updating firmware. Used the PC/Windows programmer to restore. So avoid the mobile apps for Di2 firmware updates.

    I did notice I can now update the wireless unit with the PC programmer. So more reason to avoid the mobile app.

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