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Service bulletin CypherIIFirmware

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)
TypeService bulletin
NHTSA id10215365
Published by NHTSA2022-07-06
Manufacturer's numberCypherIIFirmware
Manufacturer's date2022-06-28
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

A firmware update will be released tomorrow June 29 at 7am PT for MY17-MY23 Zero Motorcycles that operate on the Cypher II platform.

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

Electrical system

Vehicles listed
ZERO DS2017 to 2021
ZERO DSP2017
ZERO DSR2017 to 2021
ZERO FX2017 to 2022
ZERO FXE2022
ZERO FXS2017 to 2022
ZERO S2017 to 2021
ZERO SR2017 to 2021

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