Firmware

New Features:

• Battery State of Health for each battery module is now accessible via dealer diagnostic tools.

Bug Fixes/Improvements:

• Fix: Resolved a defect where motorcycles equipped with a Power Tank could, in certain conditions, start riding powered only by the Power Tank before the main traction battery pack had been detected, resulting in reduced range and potential power loss. Note: After this update, the motorcycle waits for the main traction battery pack to be detected before it will ride. On Power Tank-equipped bikes, a brief delay at key-on may occur in rare conditions. Charging is not affected.
• Fix: Resolved a bug where the displayed SoC could increase unexpectedly near the end of a discharge, causing the range estimate to show more range than was actually available.

Bug-fixes and security updates.

• This release will be available for installation via select Zero Motorcycles dealers now.
• This release will be available for installation over-the-air on June 17, 2026.

• Fix: Resolved a bug where in certain conditions, the displayed SoC did not match the actual charge level, resulting in the bike running out of power before the gauge displayed 0%.
• Note: On bikes where this issue was present, the range estimate and battery percentage may appear lower after this update. Actual riding range is not affected.

• New: Power management of main power pack optimized for transport and seasonal storage.
• Fix: Transitioning logic to limp state is now more predictable.
• Fix: Refined BMU voltage measurements to prevent false fault triggering.
• Fix: Odometer format refined to follow international diagnostic standards.
• Fix: Refined BMM initialization of critical settings during startup.  

• Fix: Resolved behavior that would cause a false Isolation fault during charging
• Fix: Resolved behavior that would block the ability to commission the motor with DIAG4Zero after replacing the motor controller.

• Enhanced key switch fault detection and handling Improved vehicle behavior when key switch input is lost during operation Added safety interlocks for OTA updates Maintained lighting and MBB operation during key switch faults

• This release includes minor bug fixes and optimizations to improve overall user experience.

• 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

• Added support for new Australia variant motorcycles.
• Resolved an issue causing false positive battery fault on startup.

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.

• MBB V36, BMU V14 and BMS V25

• MBB V34, BMU V13 and BMS V24

• Improvements to Power Tank operations at low SoC
• Resolved an issue with MBB state machine

• 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

• Mitigation of fault handling while riding under certain conditions

• Improvements to hibernation functionality
• Improvements to Long Term Storage Mode
• Resolved issue causing Stability Control faults to falsely trigger

• Improvements to BMU temperature monitoring.
• Improved timing for opening and closing the battery contactor.
• Resolved issue preventing proper timeout during charging faults.

• MBB V38, BMS V45

• Resolved issue preventing charger from topping off when expected

• Model year 2023 support
• Impovements to battery hibernation functionality

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• Various minor bugfixes

• 22MY FXE Support
• Various minor bugfixes

• Various minor bugfixes

• 22MY FXE Support
• Various minor bugfixes

• Various minor bugfixes

• 22MY FXE Support
• Various minor bugfixes

• Various minor bugfixes

• Support for MY20 Battery Compatibility

• Fix for MY15/16 Bluetooth packet handling

• Support for MY20 Battery Compatibility

• Fix for MY15/16 Bluetooth packet handling

• Support for MY20 Battery Compatibility

• Powertank firmware Improvements

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