MPC5777C bootloader Repair, Read, write - Automotive ECM

[guimond47]

Hello everyone,

Looking for some assistance or someone with extensive Microcontroller knowledge and background. 

I have an Automotive ECU with the MPC5777C Micro. Id like to be able to read the current bootloader in this ECM and clone Write to another donor ECU with the same micro. 

I would be willing to hire someone to build a utility to do this if needed. Please Contact me if this can be done. Otherwise I am Looking to attempt this. I have downloaded RAppID Boot Loader Utility But seems like i need an application file. Can anyone help?

[guimond47]

Hey Peter, 

Thanks for the reply!  You are mostlikely correct on the Jtag password. We havent made it that far yet though. Most 3rd party vehicle flash tool device will hack these passwords to be able to clone or replicate the ecm for tuning of the vehicle.. This one hasnt been done yet, so we would like to be the first. If you know of anyone with this kind of background knowledge. We would like to connect with them. 

Thank you so much.

[petervlna]

Hello,

Well the point of the PASS protection is to prevent hacking. Besides, I do not know how skilled you are with these new (those are already old) micros MPC57xx but this is just an entry protection. Even if you unlock the device, then there is CSEc cryptographic engine, which will prevent any unauthorized changes.

Best regards,

Peter

[petervlna]

Hello,

Id like to be able to read the current bootloader in this ECM and clone Write to another donor ECU with the same micro.

So you would like to dump current code and program it to another chip? Do I understand it correctly?

First of all make sure your micro is not secured. If this comes from some car then it is very likely protected from reads with 256bit JTAG password, so only people with key can access it.

If you would like to know more about it, check reference manual Chapter 67 Password and Device Security Module (PASS).

I have an Automotive ECU with the MPC5777C Micro. Id like to be able to read the current bootloader

Securing the device is very common, as every carmaker like to protect their SW from theft and copy.

Best regards,

Peter