Firmware
Zero Motorcycles firmware release notes
Updated: January 29, 2025
2020-24 Cypher III
2020-24 SR/F & SR/S + 2022-24 SR + 2023-24 DSR/X + 2024 S & DS & DSR
MBB V41
- This release includes minor bug fixes and optimizations to improve overall user experience.
Previous releases
2020-24 Cypher III
2020-24 SR/F & SR/S + 2022-24 SR + 2023-24 DSR/X + 2024 S & DS & DSR
MBB V39, BMU V17
- Resolved a bug causing SoC to drop shortly after a completed charge event.
- Improved range estimation algorithm when traveling downhill.
- Fixed a logging bug around reported charger temperature
2020-24 Cypher III
2020-24 SR/F & SR/S + 2022-24 SR + 2023-24 DSR/X + 2024 S & DS & DSR
MBB V38, BMU V16
- Added support for new Australia variant motorcycles.
- Resolved an issue causing false positive battery fault on startup.
2020-24 Cypher III
2020-24 SR/F & SR/S + 2022-24 SR + 2023-24 DSR/X + 2024 S & DS & DSR
MBB V37, BMU V15 and BMS V26
New Features:
- When the power pack gets to 0%, the motorcycle will no longer periodically wake to run system checks while keyed off. This periodic wake state will only re-enable once the motorcycle is charged.
- Support for 3kW charger updates.
Bug Fixes/Improvements:
- Resolved issue causing 12v batteries to discharge when the charge cable is plugged in while the power pack is cold.
- Improvement to kickstand state detection.
- General maintenance changes to improve codebase.
2020-24 Cypher III
2020-24 SR/F & SR/S + 2022-24 SR + 2023-24 DSR/X + 2024 S & DS & DSR
2020-23 Cypher III
2020-23 SR/F & SR/S + 2022-23 SR + 2023 DSR/X
MBB V30, BMU V10 and BMS V23
- Improvements to Power Tank operations at low SoC
- Resolved an issue with MBB state machine
MBB V29, BMU V10 and BMS V22
- Addresses Power Tank support for MY22+ SR/F, SR/S, SR, MY23+ DSR/X
- Improvements to the charging profiles for MY22+ SR/F, SR/S, SR, MY23+ DSR/X
- Resolves an issue causing an MBB to lose settings on startup
MBB V26/5, BMU V6/4, BMS V21
- Mitigation of fault handling while riding under certain conditions
MBB V25/4, BMU V6/4, BMS V21
- Improvements to hibernation functionality
- Improvements to Long Term Storage Mode
- Resolved issue causing Stability Control faults to falsely trigger
MBB V24, BMU V5, BMS V20
- Improvements to BMU temperature monitoring.
- Improved timing for opening and closing the battery contactor.
- Resolved issue preventing proper timeout during charging faults.
2017-23 CYPHER II
MBB V36/1, BMS V43/1
- Resolved issue preventing charger from topping off when expected
2017-22 CYPHER II
MBB V35, BMS V42
- Model year 2023 support
- Impovements to battery hibernation functionality
2020-22 SR/F + 22 SR
MBB V23, BMU V4 BMS V19
- Improvements for CCM update process
- Fixed false positive Contactor/Battery fault under certain conditions
- Fixed false positive DC_DC_LOW fault notification
- Fixed BMU fault at extremely low temperatures
- Resolved ride mode errors upon app sync limiting top speed and power
MBB V21, BMS V19, BMU V3
- Improvements to SoC requirements for regen to activate
- Resolved issue preventing error notifications from appearing on the dash
- Motorcycles with older dash firmware will now show cellular connected
- Resolved potential issue where throttle would activate on key on
2020-22 SR/S
MBB V23, BMU V4 BMS V19
- Improvements for CCM update process
- Fixed false positive Contactor/Battery fault under certain conditions
- Fixed false positive DC_DC_LOW fault notification
- Fixed BMU fault at extremely low temperatures
- Resolved ride mode errors upon app sync limiting top speed and power
MBB_V20/BMU_V2/BMS_V19
- Support for 22MY bikes and the new ZF14.4+ and ZF15.6+ batteries
- Support for Cypher III+ features
- Rename Street Mode to Standard for all FST bikes
- Fix for Remote Data Connectivity when the bike is not riding or charging
- Bug fixes for charge target functionality
- Various bug fixes and improvements
2020-21 SR/F
MBB/BMS_V19
- Improvements and bugfixes for the SOC algorithm
- Bugfixes for battery capacity calculations
- Improvements for charge rate tapering at high charge rate and at high pack temperatures
- Internal logging bugfixes and improvements
- Cruise Control disables when the kickstand is down
MBB/BMS_V18
- Added and Enabled Long Term Storage Mode for FST bikes
- Fixed update available notification after Bluetooth bike update
- Reduced prevalence of 12V Heating notification
- Bugfixes for scheduled charging
- Dash will no longer show kickstand down symbol if the motorcycle is in motion
- Powertank bike charging bugfixes in extreme conditions
- Decreased time on twelve-volt battery during Bluetooth and CCM FW update
- Fix for Mennekes charge bug surrounding cable limits
2020-21 SR/S
MBB/BMS_V19
- Improvements and bugfixes for the SOC algorithm
- Bugfixes for battery capacity calculations
- Improvements for charge rate tapering at high charge rate and at high pack temperatures
- Internal logging bugfixes and improvements
- Cruise Control disables when kickstand is down
MBB/BMS_V18
- Added and Enabled Long Term Storage Mode for FST bikes
- Fixed update available notification after Bluetooth bike update
- Reduced prevalence of 12V Heating notification
- Bugfixes for scheduled charging
- Dash will no longer show kickstand down symbol if motorcycle is in motion
- Powertank bike charging bugfixes in extreme conditions
- Decreased time on twelve volt battery during Bluetooth and CCM FW update
- Fix for Mennekes charge bug surrounding cable limits
2020
MBB_V33/BMS_V4022MY FXE SupportVarious minor bugfixes
MBB_V32/BMS_V39
- Various minor bugfixes
2019
MBB_V33/BMS_V40
- 22MY FXE Support
- Various minor bugfixes
MBB_V32/BMS_V39
- Various minor bugfixes
2018
MBB_V33/BMS_V40
- 22MY FXE Support
- Various minor bugfixes
MBB_V32/BMS_V39
- Various minor bugfixes
2017
MBB_V33/BMS_V40
- 22MY FXE Support
- Various minor bugfixes
MBB_V32/BMS_V39
- Various minor bugfixes
2016
BMS_V48
- Support for MY20 Battery Compatibility
MBB_V56
- Fix for MY15/16 Bluetooth packet handling
2015
BMS_V48
- Support for MY20 Battery Compatibility
MBB_V56
- Fix for MY15/16 Bluetooth packet handling
2014
BMS_V60
- Support for MY20 Battery Compatibility
MBB_V55
- Powertank firmware Improvements
For any questions/inquiries, feel free to contact the Zero Customer Support department at:
NA: +1 (888) 786-9376 ext. 2, or by email at support@zeromotorcycles.com
EU: +31 (0) 72 5112014, or by email at eu.support@zeromotorcycles.com