topic Re: How to Unsecure MPC574XP in MPC5xxx

How to Unsecure MPC574XP

guanjun — Mon, 16 Aug 2021 11:07:27 GMT

When I debug the MPC5742p mcu，The following error message pops up。Is the mcu secure?And

how I can unsecure it? IDE is S32 Design Studio for Power Architecture Version 2.1.

微信图片_20210816190311.png

Re: How to Unsecure MPC574XP

petervlna — Tue, 17 Aug 2021 06:48:20 GMT

Hello,

The device is only secured if you programmed censorship DCF records.

Did you programmed them?

best regards,

Peter

Re: How to Unsecure MPC574XP

guanjun — Tue, 17 Aug 2021 07:00:00 GMT

Hello,

First of all ，Thanks for your answer。I'm not sure if others programmed censorship DCF records.This ECU is used by others before I get it。The people who used him before can no longer be contacted。Is there some ways to unsecured the device？

best regards,

Re: How to Unsecure MPC574XP

petervlna — Tue, 17 Aug 2021 07:03:47 GMT

Well, if the device is really secured. then without valid password you can trow it to waste bin.

check reset line on chip, if it is always low.

Best regards,

Peter

Re: How to Unsecure MPC574XP

petervlna — Tue, 17 Aug 2021 07:14:14 GMT

Hello,

One more thing you can try:

[peter] - You have to apply workaround:

1. run debug session

2. wait for message that there is reset escalation

3. disconnect J13 jumper (see screenshot)

4. click on OK and simultaneously put jumper J13 back

Do this few times and you will recover from this state.

Best regards,

Peter