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Kate 2.0 Transmitter (Mx150)
Firmware Version 5.5 Released: Nov. 22, 2019 Download this firmware and save it to your local hard drive. Depending on your browser you may have to right click and select "save as..." 
Use the Flight Data Analyzer software to update your transmitter. Simply click 'Tools' on the Flight Data Analyzer menu bar and then select 'Update Firmware'.
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New features included in this release:
1. Fixed a bug that could cause the pyro board to fire the apogee charges prematurely during the boost phase of a flight. The problem could occur if the GPS reported an incorrect altitude and velocity for an extended period of time during a high acceleration liftoff. Approximately 20 G's or higher.
2. Added a 45 degree hard limit on tilt for firing the sustainer motor. If the tilt measured by the gyro ever exceeds 45 degrees, even momentarily, then sustainer motor firing is permanently disabled. This was done as a safety measure to make sure that a flight spinning out of control does not attempt to fire the sustainer just because it rotated back into a more vertical orientation. The user can still specify a tighter tilt constraint but the 45 degree hard limit is a fixed limit that cannot be disabled.
3. The built-in flight simulator now updates gyro tilt data during a simulated flight.
4. Other minor bug fixes and enhancements.
5. Still no support yet for AUX or SSR (solid state relay) outputs on the Mx152 pyro board. Coming soon....
2. Added a 45 degree hard limit on tilt for firing the sustainer motor. If the tilt measured by the gyro ever exceeds 45 degrees, even momentarily, then sustainer motor firing is permanently disabled. This was done as a safety measure to make sure that a flight spinning out of control does not attempt to fire the sustainer just because it rotated back into a more vertical orientation. The user can still specify a tighter tilt constraint but the 45 degree hard limit is a fixed limit that cannot be disabled.
3. The built-in flight simulator now updates gyro tilt data during a simulated flight.
4. Other minor bug fixes and enhancements.
5. Still no support yet for AUX or SSR (solid state relay) outputs on the Mx152 pyro board. Coming soon....
Previous version of transmitter firmware (v5.4)