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Kate-3 Receiver (Mx220)
Firmware Version 7.2 Released: Aug 29, 2021 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 receiver. 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. Added the ability to manually abort (i.e. prevent) sustainer motor firing. It is now possible to send a command from the ground that will lockout sustainer motor firing.
2. Added the ability to instantly jump from the TELEMETRY screen to the PANIC MENU by pressing both the up and down arrow buttons at the same time. The PANIC MENU provides quick access to the ABORT STAGING and MANUAL DEPLOYMENT options. This shortcut only works when the TELEMETRY screen is being displayed.
3. Added the ability to remove the tilt constraints for sustainer motor firing. This can be necessary if the rocket will be spinning at a high rate of speed for an extended period of time. In which case, manual abort may be a better option.
4. Changed the SSR (solid state relay) and AUX (auxiliary deployment) pyro channels so that they default to "DO NOT USE" mode instead of defaulting to "USE". This was done since these channels are rarely used and avoids having the user need to disable them every time.
5. Added support for Australian and New Zealand radio frequencies.
6. The receiver now uses the ground level as determined by the transmitter when sitting on the launch pad before flight. This avoids having each receiver determine its own ground level that can be slightly different from the transmitter or other receivers. When that happens, the reported max altitude above ground level is slightly different for each receiver and that can lead to some confusion and doubt.
2. Added the ability to instantly jump from the TELEMETRY screen to the PANIC MENU by pressing both the up and down arrow buttons at the same time. The PANIC MENU provides quick access to the ABORT STAGING and MANUAL DEPLOYMENT options. This shortcut only works when the TELEMETRY screen is being displayed.
3. Added the ability to remove the tilt constraints for sustainer motor firing. This can be necessary if the rocket will be spinning at a high rate of speed for an extended period of time. In which case, manual abort may be a better option.
4. Changed the SSR (solid state relay) and AUX (auxiliary deployment) pyro channels so that they default to "DO NOT USE" mode instead of defaulting to "USE". This was done since these channels are rarely used and avoids having the user need to disable them every time.
5. Added support for Australian and New Zealand radio frequencies.
6. The receiver now uses the ground level as determined by the transmitter when sitting on the launch pad before flight. This avoids having each receiver determine its own ground level that can be slightly different from the transmitter or other receivers. When that happens, the reported max altitude above ground level is slightly different for each receiver and that can lead to some confusion and doubt.
Previous version of receiver firmware (v7.1)