Please note that if the HX100 is used the lastest version of F4 AIO 12A FC, you should flash following CLI.
Here is the pic of the differences among three versions of FC.
This Cli DIFF can be used for Betaflight_MATEKF411_3.5.3 on HX100 (For F4 AIO 12A FC V3.0)
name HX-100 feature LED_STRIP beacon RX_LOST beacon RX_SET serial 0 2048 115200 57600 0 115200 serial 1 64 115200 57600 0 115200 led 0 0,0::A:0 led 1 1,0::A:0 led 2 2,0::L:0 led 3 3,0::L:0 mode_color 6 0 2 aux 0 0 0 1700 2100 0 0 aux 1 1 1 1300 1700 0 0 aux 2 2 1 1700 2100 0 0 aux 3 28 2 900 1300 0 0 aux 4 35 2 1700 2100 0 0 set serialrx_provider = SPEK2048 set acc_calibration = -67,-25,-324 set baro_hardware = NONE set rssi_channel = 16 set motor_pwm_protocol = DSHOT600 set vbat_min_cell_voltage = 32 set vbat_warning_cell_voltage = 34 set ibata_scale = 580 set ibata_offset = 100 set yaw_motors_reversed = ON set small_angle = 180 set pid_process_denom = 1 set osd_warn_batt_warning = OFF set osd_warn_core_temp = OFF set osd_vbat_pos = 2433 set osd_rssi_pos = 289 set osd_tim_2_pos = 2455 set osd_flymode_pos = 2425 set osd_throttle_pos = 2401 set osd_crosshairs_pos = 2253 set osd_current_pos = 2368 set osd_mah_drawn_pos = 2392 set osd_craft_name_pos = 2443 set vcd_video_system = NTSC set spektrum_sat_bind = 9 save