SHIMANO Di2 Firmware Security Updates (DuraAce / Ultegra / 105 / GRX)

Shimano's 12-speed wireless Di2 groupsets have been in the spotlight due to vulnerabilities related to replay attacks and signal jamming. In response, they've released firmware updates to address these risks. This video provides a comprehensive overview of the affected systems, the update process, and why it's important to install these updates.

Update September 2nd 2024:
Shimano are now correctly seeding the R9150 firmware binary with E-Tube. The file I'd manually downloaded/installed and the now-seeded file are the same:
99896f930efceb8ee4f52a43f4997b90 RDR9250-D.4.2.3.dat
99896f930efceb8ee4f52a43f4997b90 RDR9250.4.2.3.dat

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Links:
GPLama Shimano Di2 Wireless Shifter Updates:    • Installing Shimano 12 Speed Di2 Road ...  
BetterShifting Website: https://bit.ly/3dsIykE
Shimano E-Tube Firmware Webpage: https://bit.ly/shimoanoetubefw
Shimano Di2 FAQ for these August 30th Updates: https://bit.ly/3Z1hWzv

Video Index:
0:00 Intro
0:37 Affected Di2 Groupsets
0:58 Firmware Versions and Update Process
1:57 Updating R8100 Di2 Today
7:02 Commentary on the Replay Attack Vulnerability
7:37 Shimano's Awkward Communications
10:01 Does This Even Matter? Why Bother?
10:51 Wrap Up

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