topic Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060) in i.MX RT Crossover MCUs

Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

pooisonner — Mon, 30 Mar 2026 08:02:41 GMT

Hello,

I am currently developing a Matter over Wi-Fi thermostat and encountering an OTA failure issue. Interestingly, the OTA works fine when using chip-tool, but it consistently fails when triggered via the Apple Home app.

Environment:

MCU: RT1060
Flash: 32MB
IoT Protocol: Matter over Wi-Fi
Matter Version: NXP Matter 1.4.0.2.1
Ecosystem: Apple HomePod, iPhone 16 Pro (Apple Home App)

Error Details:
The process triggers the following assertion error:

Error: ASSERT ERROR " pMsg != NULL "
File: .../middleware/wireless/framework/services/OtaSupport/Source/OtaSupport.c
Line: 1283
Function: OTA_PostWriteToFlash

Problem Summary:

OTA update is successful when using chip-tool.
OTA update fails when using Apple HomePod and iPhone 16 Pro (Apple Home App).

Does anyone know why this error occurs specifically within the Apple ecosystem, or how to fix this assertion error in OtaSupport.c?

Thank you!

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Mon, 30 Mar 2026 10:27:07 GMT

Hi, @pooisonner

Can you please let me know your Wi-Fi chipset?

And also your SDK version？ Which example are you using?

You are using MCUXpresso IDE or MCUXpresso plugins for VSCode? Are you using RTOS or Zephyr OS?

Please let me know more details and reproduce steps so that I can help you further.

Best regards,

Christine.

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

pooisonner — Mon, 30 Mar 2026 11:06:08 GMT

Platform: IW610
Development Environment: Thermostat development via MCUXpresso for VS Code: Matter on Windows (24.12.71)
OS: FreeRTOS
Issue: Consistently occurs during OTA updates

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Thu, 02 Apr 2026 09:58:30 GMT

Hi, @pooisonner

Can you please let me know you detailed reproduce steps?

I prefer to have a try on my local side to see whether can reproduce this issue.

If you referred to any link, please also share to me the link.

In this way, we will stay in one same page to understand the issue. So that we can help you to resolve the issue ASAP.

Thanks for your corporations.

Best regards,

Christine.

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Tue, 14 Apr 2026 06:21:14 GMT

Hi, @pooisonner

Can you please let me know you detailed reproduce steps?

I prefer to have a try on my local side to see whether can reproduce this issue.

If you referred to any link, please also share to me the link.

In this way, we will stay in one same page to understand the issue. So that we can help you to resolve the issue ASAP.

Thanks for your corporations.

Best regards,

Christine.

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Fri, 17 Apr 2026 05:43:45 GMT

Hi, @pooisonner

Can you please let me know you detailed reproduce steps?

I prefer to have a try on my local side to see whether can reproduce this issue.

If you referred to any link, please also share to me the link.

In this way, we will stay in one same page to understand the issue. So that we can help you to resolve the issue ASAP.

Thanks for your corporations.

Best regards,

Christine.

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Mon, 20 Apr 2026 07:51:54 GMT

Hi, @pooisonner

Do you still need our support?

Or you already fixed the issue by yourself?

If still need our support, would you please let me know your detailed reproduce steps?

If you referred to any link, please also share to me the link.

In this way, we will stay in one same page to understand the issue. So that we can help you to resolve the issue ASAP.

Thanks for your corporations.

Best regards,

Christine.

Re: Matter over Wi-Fi OTA Failure - ASSERT ERROR in OtaSupport.c (RT1060)

Christine_Li — Wed, 22 Apr 2026 09:03:05 GMT

Hi, @pooisonner

Do you still need our support?

Or you already fixed the issue by yourself?

If still need our support, would you please let me know your detailed reproduce steps?

If you referred to any link, please also share to me the link.

In this way, we will stay in one same page to understand the issue. So that we can help you to resolve the issue ASAP.

Thanks for your corporations.

Best regards,

Christine.