PX4 Autopilot on the Crazyflie 2.1

I tried to flash the old and latest version of PX4 autopilot on the Crazyflie 2.1 using the documented procedure ([Crazyflie 2.1 | PX4 User Guide (main))].

  1. Latest version: Flashed the PX4 1.14 firmware, and observed only one motor (M4) is continuously running, while others remain inactive.

    • No connection with Qgroundcontrol
  2. PX4 Older version: 1.12.2 and 1.12.3 tired to flash:

    • After power off, every time we need to calibrate the sensor.
    • Showing the error Accel #0 fail: TIMEOUT!
    The motors are not responsive.

Could anyone please help on above problems??

I can only confirm I am observing the same behavior.
1.12.1 and 1.12.0 (built from source) behaves the same as other 1.12.x versions