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Kate 2.0 Transmitter (Mx150)
Firmware Version 5.6 Released: Mar. 24, 2020 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. Sustainer motor igniter firing duration is now adjustable from 0.5 sec to 5.0 sec. Default is now 3.0 sec. The previous default was 1.0 sec. Firmware version 4.5 or later is required in the Mx120 Receiver to allow the firing time to be adjusted. Only the sustainer motor igniter pyro channel has an adjustable firing time. All other pyro channels use a fixed time of 0.5 sec. An adjustable sustainer motor igniter firing time provides flexibility for using different types of igniters.
2. Added the ability to output GPS NMEA sentences in real time from a modified version of the Mx152 pyro board that has its AUX pyro channel replaced with a UART serial port. This allows real time GPS information to be streamed from the transmitter to other electronics onboard the rocket. For example, a GPS overlay board for displaying live GPS information on a real time video downlink signal. When enabled, the serial port will send out two NMEA GPS sentences. They are the GPGGA and GPRMC sentences. They are sent out as a pair, once every second. The serial port operates at 4800 baud with one start bit, one stop bit, and no parity. The output is open collector. The user must provide a 1K pull-up resistor to 5V or 3.3V on their end depending on the signal level they need. Firmware version 4.5 or later is required in the Mx120 Receiver to support this new capability.
3. Still no support yet for AUX or SSR (solid state relay) outputs on the Mx152 pyro board.
2. Added the ability to output GPS NMEA sentences in real time from a modified version of the Mx152 pyro board that has its AUX pyro channel replaced with a UART serial port. This allows real time GPS information to be streamed from the transmitter to other electronics onboard the rocket. For example, a GPS overlay board for displaying live GPS information on a real time video downlink signal. When enabled, the serial port will send out two NMEA GPS sentences. They are the GPGGA and GPRMC sentences. They are sent out as a pair, once every second. The serial port operates at 4800 baud with one start bit, one stop bit, and no parity. The output is open collector. The user must provide a 1K pull-up resistor to 5V or 3.3V on their end depending on the signal level they need. Firmware version 4.5 or later is required in the Mx120 Receiver to support this new capability.
3. Still no support yet for AUX or SSR (solid state relay) outputs on the Mx152 pyro board.
Previous version of transmitter firmware (v5.5)