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User submitted reviews
Review by Anonymous
Reviewed 7/15/2024
by Anonymous
Sf bay
Works very well
Needed too update shifter firmware on 9200 without wiring to battery. Worked perfectly fine.
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Review by RichBklyn
Reviewed 4/15/2023
by RichBklyn
Cycling Enthusiast
New York City
Handy for updating firmware on 12sp Di2 wireless shifters
I used this to connect my normally wireless shifters to the battery (seatpost) in order to update the L and R shifter firmware. A lot easier than pulling out the battery in the seatpost.
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Review by Brian g
Reviewed 3/6/2023
by Brian g
1 of 1 customers found this review helpful.
Perfect for updating 12 speed shifters
To update 12 speed shifter software, disconnect wire from front derailleur, connect this junction to wire, then connect a second wire to the shifter. Use Shimano software. Boom.
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