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CX-3
Flight Computer
APPENDIX B: Updating the CX-3 Firmware
1 . Download the CX-3 firmware update file to your
computer .
2 . Remove one battery from the device .
3 . Attach the micro USB cable to your computer and
CX-3 .
4 . While holding the Power Switch ON, insert battery .
• This will put the device into Bootloader mode .
The device will appear as a USB hard drive with
the name BOOTLOADER .
• Note: the screen on the device will remain
blank .
5 . Open the BOOTLOADER hard drive .
• There should be a single text file named
“READY .TXT”
6 . Drag the new CX-3 firmware into the
BOOTLOADER hard drive window .
• The file will begin to download to the device
and may take several seconds .
• Once it successfully downloads, the bootloader
will load the new firmware into flash memory
and reset the device .
• Note: at this point, the BOOTLOADER hard
drive will disappear .
Updates will periodically become available at
www.asa2fly.com/CX3
.
Follow these steps to keep your CX-3 Flight Computer up to date:
7 . Verify successful download and programming of
the device .
• Once the device resets, the BOOTLOADER
hard drive will be available once again .
• Open the BOOTLOADER hard drive .
• If the firmware was updated successfully, there
will be a single text file named “SUCCESS .TXT”
8 . Reset device to run new firmware .
• Remove and replace a battery . This will reset
the device and run the normal program .
• Turn on the device using the power switch .
• Verify version on main settings screen (scroll
down to bottom of list) .
