RD-RX825
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Aug 30, 2024
Ver. 4.2.3
■ Changes
Security performance for wireless communications between the shifter and rear derailleur has been improved.
Click here to view FAQs for more information. https://bike.shimano.com/faq/DI20A#D-7030
*The firmware for both the shifter and rear derailleur must be updated for proper operation of the Di2 system.
■ Others
General bug fixes. -
May 24, 2024
Ver. 4.2.1
Firmware released.