Chapter 1: Flashing Flight Controller Firmware
The AeroEgg Technology AET F405A WING flight controller currently supports ArduPilot and INAV firmware.
This guide focuses on fixed-wing configuration and tuning with ArduPilot firmware. You can upgrade the flight controller by flashing the latest firmware.
Download the required firmware from the AeroEgg Technology firmware site: https://download.aeroeggtech.com/
Download the manufacturer-provided 405a-4.6.0-arduplane_with_bl HEX firmware file, which includes the BL bootloader, to the computer.
Open INAV Configurator.
Click Firmware Flasher on the left, select Load Firmware [Local] in the lower-right corner, and choose the flight-controller firmware file downloaded to the computer.
Press and hold the flight controller Boot button, then connect the flight controller to the computer with a USB Type-C data cable. When DFU appears in the upper-right corner of INAV Configurator, the controller is ready for firmware flashing.
Some computers may fail to detect DFU mode because of a driver issue. Open Device Manager and check Universal Serial Bus devices for an STM32 BOOTLOADER device.
If the device has a warning icon, install or update its driver.
Run Zadig, open Options, and select List All Devices.
Select STM32 BOOTLOADER from the device drop-down list on the main page.
Click Upgrade Driver to install the driver.
Wait for driver installation to complete, then disconnect the flight controller USB cable. Hold the Boot button while reconnecting USB; DFU mode should now be detected correctly.
Wait while the ground station flashes the firmware to the flight controller.
After flashing is complete, verification starts automatically.
When Programming: SUCCESSFUL is displayed, the firmware has been written successfully. Close INAV Configurator, disconnect the flight controller USB cable, and reconnect it to the computer.
The flight controller firmware update is now complete. Important: Disconnect all serial-bus peripherals throughout the firmware-flashing process, including SBUS, ELRS, and CRSF receivers, GPS modules, digital video air units, and telemetry links.