# PX4IO Not Supported

**URL:** <https://discuss.px4.io/t/px4io-not-supported/47204>\
**Category:** PX4 Autopilot\
**Created:** [August 27, 2025, 9:17am UTC](https://discuss.px4.io/t/px4io-not-supported/47204 "2025-08-27T09:17:26Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![nie](https://discuss.px4.io/letter_avatar_proxy/v4/letter/n/97f17d/32.png) [@nie](https://discuss.px4.io/u/nie)\
**Post date:** [August 27, 2025, 9:17am UTC](https://discuss.px4.io/t/px4io-not-supported/47204/1 "2025-08-27T09:17:26Z")

</div>

Dear all:

Recently I designed a new PIXHAWK V6C flight controller as standard, using a STM32H743 FMU processor and a STMF103 IO processor.  
I tested both I/O-PWM-OUT and SBUS-IN and found that neither was useful, and then I found that both were set up on IO processors. So I burned the px4\_io-v2\_bootloader.bin through the IO debug interface, and then the yellow light on the I/O side kept flashing.

 ![fcc445fcccff2885bd7d884f36206e1a_compress](https://discuss.px4.io/uploads/default/original/3X/3/d/3d0d41902b7c879e5eb312d5de863ad8f7465623.jpeg)

By consulting the relevant information, I need to open a parameter called “SYS\_USE\_IO”, but I can’t find this parameter in QGC, and when I enter the relevant command in the MAVLINK console, the output is as follows:

> NuttShell (NSH) NuttX-11.0.0  
> nsh\> ver all  
> HW arch: PX4\_FMU\_V6C  
> HW type: V6C005005  
> HW version: 0x005  
> HW revision: 0x005  
> PX4 git-hash: 6ea3539157ca358c70a515878b77077af7d4611d  
> PX4 version: Release 1.16.0 (17826047)  
> OS: NuttX  
> OS version: Release 11.0.0 (184549631)  
> OS git-hash: 886acbbdb4f061e5c0ce1a76afbcfa7cb7df9849  
> Build datetime: Aug 6 2025 15:07:26  
> Build uri: localhost  
> Build variant: default  
> Toolchain: GNU GCC, 9.3.1 20200408 (release)  
> PX4GUID: 0006000000003934393331335102001c0035  
> MCU: STM32H7[4|5]xxx, rev. V

> nsh\> px4io status  
> INFO [px4io] PX4IO Not Supported

> nsh\> px4io start  
> INFO [px4io] PX4IO Not Supported

Now I have no clue about this problem, I hope someone can help if they encounter a similar problem, thank you!

---

<div class="post-metadata">

**Author:** ![system](https://discuss.px4.io/uploads/default/original/3X/7/3/73ce918bdcd64854de904f0c8d9ab70ca9723f2a.png) [@system](https://discuss.px4.io/u/system)\
**Post date:** [November 25, 2025, 9:18am UTC](https://discuss.px4.io/t/px4io-not-supported/47204/2 "2025-11-25T09:18:10Z")

</div>

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.