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How to recover from a wrong types DCF record in Calypso MPC5746C MCU?

Question asked by Youssef Boughallad on Oct 19, 2017
Latest reply on Oct 23, 2017 by Youssef Boughallad

Hi,

This my first post in this community and let's start with a very critical problem.

I tried to disable the MBISt test on MPC5746C, and I read from a file pointed to in the MCU datasheet that I have write a pattern in the next free area in the UTEST area for DCF records. the pattern is : 0x7F000000 0x0008000C.

But due to a mistake a started by writing the pattern : 0XFFFFFFFF 0x7F000000, and then I recovered that by writing the correct pattern after that wrong pattern.

The problem is that the MCU now doesn't want to start up and get stuck in the BAF area, indicating that a self test occurred all the time.

So is there any solution to recover from this ? or to bypass the wrongly written DCF record ?

 

Thank you very much for your support in advance.

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