Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
Cypher III OTA Firmware
Over The Air
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.
ZMDN-052026
Other
New diagnostic tool Tuner is available for 2017 and newer model.s On May 15th, a new firmware will be released for our FST / Cypher III models, primarily focused on improving cybersecurity.
Chain Kit Recall
Service Bulletin/Repair Instructions
Dealer notification of Chain Kit Recall (23E074).
Dealer News
Service Bulletin/Repair Instructions
Zero Motorcycles Dealer News 11.22.22 - New Firmware, Diag4Zero, Holiday Hours
ZMDN 83022
Service Bulletin/Repair Instructions
Cypher II Firmware Update Notice
CypherIIFirmware
Service Bulletin/Repair Instructions
A firmware update will be released tomorrow June 29 at 7am PT for MY17-MY23 Zero Motorcycles that operate on the Cypher II platform.