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PostPosted: Mon Aug 18, 2014 2:53 am 
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Joined: Fri Oct 29, 2010 6:10 am
Posts: 85
i posted this topic: http://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=127234

another solution is to find a new battery with firmware older than v3.0.5, and then never update it.

the ones coming from shimano now have the new FW, so you'll need to find one in a shop that has the older FW. i have a few.


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PostPosted: Tue Aug 19, 2014 1:19 pm 
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Joined: Mon Aug 18, 2014 12:54 am
Posts: 2
Thanks for this note. I went ahead an ordered an FD 6870. Buying a battery with the old firmware just feels like I'm putting off the unavoidable. :(

climber8 wrote:
i posted this topic: http://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=127234

another solution is to find a new battery with firmware older than v3.0.5, and then never update it.

the ones coming from shimano now have the new FW, so you'll need to find one in a shop that has the older FW. i have a few.


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Posted: Tue Aug 19, 2014 1:19 pm 


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PostPosted: Thu Sep 18, 2014 11:16 pm 
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Joined: Wed Feb 15, 2012 7:11 am
Posts: 34
All right, finally read through the whole thread.

My bike has a full 6770 system with EW67 junction, external battery, and charger BCR1. I want to update the firmware.
1. Is the way to go about this swapping the junction to a EW90 (with 2 SD-EW50 wires)?
1b. Are the 300 mm wires what everyone recommends?
2. Is the SM-BCR2 necessary for the PC connection?


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