What are the differences between J-Flash and MCUXpress IDE when using OTFAD?

TnseoRnr — Tue, 25 Aug 2026 02:21:05 GMT

What is the difference between J-Flash and MCUXpress IDE when applying OTFAD?

I am currently testing OTFAD configuration using an RT1010 EVK.

I used the MCUXpress SPT program to configure OTFAD and download the firmware.

I set the BOOT mode of the configured EVK to FlexSPI Boot mode.

I have a question regarding JTAG access afterward.

Although I did not configure any JTAG security settings, the J-Flash program connects to the target, but I cannot read or rewrite the flash memory afterwards.

However, if I build the original project in MCUXpress IDE and download it using a feature like "Debug & Download?", I can download a version where OTFAD is not configured.

I would like to know the difference between these two programs.

Why is access not possible in J-Flash?

But why is it possible in the IDE?

i.MX ProcessorsのトピックWhat are the differences between J-Flash and MCUXpress IDE when using OTFAD?

What are the differences between J-Flash and MCUXpress IDE when using OTFAD?