Hi Per Canal,
Today, I do the MIMXRT1060-EVK board , SDK2.8.0 iled_blinky, and the MCUXPresso Secure Previsioning testing, it works OK on my side.
1. Generate the .s19 file in MCUXPresso IDE

Build and generate the .s19 files

2. Use the MCUxpresso Secure Provisioning
MIMXRT1060-EVK board, you need to enter the serial download mode: SW7 1-OFF, 2-OFF, 3-OFF, 4-ON
Select the .19 in the source executable image
And click the build image button.

Press the write Image button:

Now, change the boot mode to internal boot: SW7 1-OFF, 2-OFF, 3-ON, 4-OFF
Press the reset button, the led is blinking now.
You can follow my steps and try it on your side.
I also attach app.s19 file for your reference.
If you still have questions about it, please kindly let me know.
Best Regards,
Kerry
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-----------------------------------------------------------------------------