MCX MicrocontrollersのトピックRT1176 external flash boot failure

RT1176 external flash boot failure

Amily — Thu, 27 Aug 2026 11:34:47 GMT

I’m new to RT1176 development. Under the J-Link SWD mode, the gyroscope, Wi-Fi and other peripherals have been fully debugged and work properly. However, I’m having trouble booting from Flash and it fails consistently. Could you tell me which aspects I should check?

Re: RT1176 external flash boot failure

marek-trmac — Thu, 27 Aug 2026 11:42:35 GMT

Hi @Amily

I'd recommend to verify whether FCB (Flash Configuration Block) is correct.

Consider to use Secure Provisioning Tool (https://nxp.com/sec) to install the bootable application into the flash. It can help you to find common mistakes.

Re: RT1176 external flash boot failure

Pablo_Ramos — Thu, 27 Aug 2026 21:45:39 GMT

Hi @Amily,

Adding to what Marek mentioned, the following knowledge base article is a good starting point for understanding how the i.MX RT boots from FlexSPI.

i.MX RT FLEXSPI booting guide

Additionally, could you help me with the following questions?

When you performed the test, did you use the EVK, or are you using a custom board?
If you are using a custom board, which flash device are you using? Is it the same device used on the EVK?
Which IDE are you using?
Which SDK version did you use?
When debugging the peripherals, did you use any SDK examples?

Best Regards,
Pablo