MiMXRT1170-EVKB says Failed on connect: Nn(05). Wire ACK Fault in DAP access

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MiMXRT1170-EVKB says Failed on connect: Nn(05). Wire ACK Fault in DAP access

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levicriley
Contributor I

It possibly has bad firmware on it

I have seen mention of serial boot mode to erase as a possible solution but following the steps were for *-*EVK not *EVKB


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Gavin_Jia
NXP TechSupport
NXP TechSupport

Hi @levicriley ,

Thanks for your interest in NXP MIMXRT series!

Going into serial download mode and clearing the flash is a universal method. It works equally well for EVK and EVKB. You can refer to this post: https://community.nxp.com/t5/i-MX-RT-Knowledge-Base/RT-board-recovery-for-debugger-connect-issues/ta...

Best regards,
Gavin

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