Need Help Flashing PX4 v1.15.4 on MicoAir H743 v2 - QGC Not Finding Firmware

PX4 Autopilot
1

Hi everyone,

I’m working on a GPS-denied drone project using Isaac ROS VSLAM with Jetson Orin Nano, which requires PX4 firmware v1.15.4 for the flight controller.

My Setup:

  • Flight Controller: MicoAir H743 v2

  • Current Firmware: ArduPilot (need to switch to PX4)

  • Issue: QGroundControl cannot find/detect firmware for this board

Problem: When I try to flash PX4 through QGroundControl’s automatic firmware selection, it doesn’t show any firmware options for the MicoAir H743 v2. The board isn’t appearing in the standard PX4 board list.

What I’ve Tried:

  • Connected via USB to QGroundControl

  • Checked firmware update section

Questions:

  1. Has anyone successfully flashed PX4 onto a MicoAir H743 v2?

  2. Which PX4 build target should I use for this board? (mro_x7pro? holybro_kakuteh7?)

  3. Do I need to manually download a .px4 file and flash it via custom firmware?

  4. Should I try entering DFU/bootloader mode first?

Any guidance or step-by-step instructions would be greatly appreciated! I specifically need v1.15.4 for compatibility with my MAVROS setup.

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i found these two but the QGC gives error

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2

The target was added after the 1.15 release and has not been back ported. You’ll need to contact the manufacturer.

3

The manufacturer’s website provides firmware version 1.15.2. In my case, I added a separate target for version 1.15.4 and built it myself. You can also take the board target from version 1.16 and build it with the 1.15.4 firmware — it works without any issues. Hope this helps.