S32K144 is stuck

kmh48301 · ‎02-02-2022

Hi

I inserted csec key and I Erased first sector in Pflash (0x0 address)

so, when i plug in debugger, it tries to mass erase. but because it has csec key, mass erase doesn't work.

I need to use this s32k144-evb-q100....

Please help me.

Thanks

Best Regards

Phillip

lukaszadrapa · ‎02-03-2022

Hi Phillip,

in short - there's no way to recover.

If the flash configuration field is erased, FSEC is 0xFF and the device is secured. To unsecure the device, it's necessary to perform mass erase. But if CSE is enabled, mass erase cannot be exeucted. It would be necessary to destroy the partition using CMD_DBG_CHAL and CMD_DBG_AUTH when you need to also know MASTER_ECU_KEY. There's no way to escape this circle.

Regards,

Lukas

View solution in original post

lukaszadrapa · ‎02-03-2022

Hi Phillip,

in short - there's no way to recover.

If the flash configuration field is erased, FSEC is 0xFF and the device is secured. To unsecure the device, it's necessary to perform mass erase. But if CSE is enabled, mass erase cannot be exeucted. It would be necessary to destroy the partition using CMD_DBG_CHAL and CMD_DBG_AUTH when you need to also know MASTER_ECU_KEY. There's no way to escape this circle.

Regards,

Lukas