Cobra Firmware Revision History

Release Notes
Version Number Type Release Date Release Notes
1.42 Initial 07/28/25
  • Initial Cobra 5 HV software
1.44 Production 06/01/25
    Cobra 8 and 10 only
  • Bug Fix – Torque Limit Motor Test: Bug prevented the motor test from being completed. Fix allows the test to be completed so torque limit can be enabled.
  • Bug Fix – Aux wire Max Power Adjustment: Bug caused braking to be affected when adjusting max power. Now braking is not affected by adjustments to max power via the aux wire.
  • Added “Fan Always On” feature: When enabled, the ESC cooling fan will run constantly. When unchecked, the fan will be thermally controlled, only turning on when ESC temp exceed ~140° F.
  • Data Log Improvement: Improved accuracy of battery voltage in data logging.
  • Improved braking Braking strength has been increased, brake should be stronger at higher speeds.
1.42 Production 04/09/25
    Cobra 5 only
  • Increased motor drive frequency: Results in smoother throttle operation and less stress on the ESC during high current spikes.
  • Added dynamic braking frequency: Improves overall brake strength and reduces stress on ESC during hard braking.
1.36 Obsolete 03/19/25
  • Initial Cobra 5 software
1.21 Obsolete 06/13/24
  • Initial Cobra 10 software
  • Improved throttle response: Significantly increased the throttle response rate. Allows for much faster acceleration and more powerful overall feel
  • Smoother Startup: Improved low power start for crawlers
  • Added "Hill Hold" feature: New feature for rock crawling. Dramatically increases braking strength while at neutral. See the Hill Hold information page for more details.
1.17 Obsolete 04/26/24
    Cobra 8 Only
  • Small improvement to sensored startup
1.14 Obsolete 04/03/24
    Cobra 8 Only
  • Sensorless Motor Operation: Improvement of sensorless motor operation under heavy loads and hard acceleration
  • Smoother Startup: Reduces cogging on startup with sensorless and sensored motors
  • Data Logging Bug Fix: Fixed and issue that would cause data logging to stop functioning
1.13 Initial/Obsolete 02/02/24
  • Initial Cobra 8 software