s32k144 csec secure boot BOOT_MAC update

[kmh48301]

Hi

How can I update BOOT_MAC when secure boot is activated.

!!! I need to avoid erasing csec keys (returning to factory state). !!!

Thanks

Best Regards

Phillip

[lukaszadrapa · Accepted solution]

Hi Phillip,

this is described in the AN5401:

So, the procedure is the same as when updating a key. You just need to calculate the new BOOT_MAC somehow.

Regards,

Lukas

[cychen88]

if Secure Boot Modes is Strict Sequential Boot Mode，when secure boot check is error the flash system comes out of RESET，How to recover in this case？