Firmware for Matrix 1S Brushless Flight Controller (3IN1 HD)

Basic firmware: Betaflight_4.5.1_BETAFPVG473

Receiver firmware version: ELRS 2.4G V3.5.3

ESC firmware version: Bluejay A_X_5_96KHz_ V0.19.2

Note:

• It is recommended to use BetaFlight version 10.10.0 parameter adjustment software.
• This flight controller is specifically developed for the HD version and doesn't have the analog OSD (On-Screen Display) function.
• It is strongly recommended that users avoid operating the drone at voltages below 3.4V to ensure flight safety and extend the service life of the equipment.
• Please carefully identify the gyroscope and download the corresponding firmware to flash it. You can identify it by observing the model number of the gyroscope chip on the flight controller hardware, or by connecting to Betaflight Configurator. The methods are as follows.

Note: This is for the BMI270 version of the gyroscope.

BF_4.5.1_Matrix Brushless 3IN1 HD V1.0 BMI270 20251215.hex

Note: The gyroscope used is the ICM42688 version.

BETAFPV_4.5.1 Matrix 1S 3IN1 HD.hex

Please carefully identify the gyroscope model and download the corresponding firmware for flashing. You can check this by observing the gyroscope chip model in the flight controller hardware or by connecting to the Betaflight ground station, as follows:

• How to differentiate the firmware of BMI270 and ICM42688 gyroscopes