After enabling OEM_CLOSE on the FRDM-IMXRT1186 development board, I can no longer debug the device. I saw in the reference manual that nxpdebugmbox can be used to re-enable debugging, but I tried it and was not successful.
I have reviewed the links you provided and followed the recommended procedure, but I am still experiencing the same issue.
I only signed the image and did not encrypt it. I also set OEM_CLOSE.
I am using nxpdebugmbox only to re-enable the debug functionality.
I have uploaded the SEC project as an attachment, along with the relevant logs. Could you please help analyze the project and logs and identify the cause of the issue?
Hello @yanyanwang
In SEC tool documentation, you can find troubleshooting for debug authentication:
https://docs.mcuxpresso.nxp.com/secure/latest/09_troubleshooting.html#debug-authentication
Some useful tips can be also found in
If this does not help, can you provide details about configuration? Could you share the SEC tool workspace settings?
It seems this problem is related to SEC 26.03. We recommend updating to SEC 26.06.
We are sorry for inconvenience.
Note: SEC 26.06 also contains fix for the SPARSE image format
The procedure is as follows:
1. Use the SEC tool to perform the authentication.
2. The authentication is successful.
3. Then click the Debug button to start debugging.
4. However, the debugging attempt fails.