S32KのトピックDevice is secure

Device is secure

Hanchun — Sun, 25 Jun 2023 09:31:49 GMT

Hi NXP engineer

My NXP MCU is secure, how can I unsecure it? My chip type is FS32K144HAT0MLHT

My operation process is as follows.

First, I downloaded the firmware by J-link, but it said my device is secure.

Then I want to verify what is the reason, so I tried to download the firmware by PEMciro and S32DS, but the S32DS said "Device is secure. Erase to unsecure? ". I clicked "Yes" twice, and it skipped to the PEmicro Connection Assistant window. It caused I couldn't debug or do any other things.

I tried 3 times by PEmicro and S32DS, the phenomenon is same.

Re: Device is secure

Senlent — Mon, 26 Jun 2023 01:42:06 GMT

Hi@Hanchun

please use j-link to read MDM-AP register to find why the device get locked.

you can follow this chinese article as below .

S32K1xx系列MCU应用指南之芯片锁死(lockup)复位原因分析与恢复方法详解

Re: Device is secure

Hanchun — Tue, 27 Jun 2023 10:04:22 GMT

Thanks so much. I will follow this article.