Firmware for Matrix 1S Brushless Flight Controller (5IN1 II)

20260525(Only applicable to BMI270)

Update Details: 

1. Added support for the BMI270 gyroscope;
2. Applied a -135° heading offset to accommodate the BMI270;
3. This release is primarily aimed at adding support for the BMI270 for use in upcoming production batches.

         BF_2026.6.0_Matrix Brushless 5IN1 V2.0_e92c10887_20260525.hex

20260417

Update Details: 

1. Compiled against the master branch of Betaflight;     
2. This firmware simultaneously supports ICM42688P, ICM42605, ICM42622P, LSM6DSK320X, and LSM6DSV16X;
3. The primary purpose of this release is to add support for LSM6DSV16X, which will be used in the next several batches of mass production.

      Configurator: https://master.app.betaflight.com/

      BF_2026.6.0_Matrix Brushless 5IN1 V2.0_79c2435f6_20260417.hex

20260303

Update Details:
1.Compiled based on the master branch of Betaflight.
2.This firmware simultaneously supports ICM42688P, ICM42605, ICM42622P, and LSM6DSK320X.
3.This release is mainly to add support for the ICM42622P, which will be used in the next several batches of mass production.

Configurator: https://master.app.betaflight.com/

BF_2026.6.0_Matrix Brushless 5IN1 V2.0_26b3b6761_20260303.hex

20251204

Basic firmware: This firmware is built on Betaflight 4.5.3 and designed for the Matrix 1S II Brushless Flight Controller.
 

VTX default frequency: R1 5658MHz

VTX default power: 400mw (After the test is completed, switch the power to 25mW.)

Receiver firmware version: ELRS V3.5.6

ESC firmware version: Bluejay V0.19.2

Note:

1. The VTX antenna must be installed when the FC is powered on, otherwise the VTX chip may be burned.
2. Receiver binding method: Power on and off three times within 5 seconds. The LED light on the front end of the flight controller (printed with BETAFPV silk screen) flashes green twice quickly to indicate the binding state.

Please download the following firmware.

BF_4.5.3_Matrix Brushless 5IN1 V2.0 ICM42688 20251204.hex