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Over-the-air update Cypher III OTA Firmware

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11034503
Published by NHTSA2026-07-06
Manufacturer's numberCypher III OTA Firmware
Manufacturer's date2026-06-09
Campaign id or software versionMBB V45, BMU V21, BMS V27
NHTSA componentENGINE; UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM

NHTSA's summary

CYPHER III OTA FIRMWARE RELEASE Coming Soon The latest firmware release (MBB V45, BMU V21, BMS V27) for 2020+ Cypher III motorcycles will be available Over The Air to customers on June 17. This release includes: Bug fixes Security improvements General system stability enhancements While customers may simply see an update notification, dealers should be aware that this release marks an important transition toward the Tuner diagnostic tool. For motorcycles running the latest Cypher III firmware, Tuner will become the primary tool for many service and maintenance functions moving forward. If your dealership hasn't explored Tuner yet, now is the perfect time to get started.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Fuel system

Vehicles listed
ZERO DS2020 to 2021
ZERO DS2023 to 2026
ZERO DSR2020 to 2021
ZERO DSR2023 to 2026
ZERO DSR/X2023 to 2026
ZERO DSRP2023 to 2025
ZERO S2020 to 2021
ZERO S2023 to 2026
ZERO SR2020 to 2024
ZERO SR/F2020 to 2026
ZERO SR/S2020 to 2026

Listing a model year does not mean every vehicle of it is concerned: the document says which.