Audi A6 dash 4B0920933G with Micronas CDVV1303 M727

[Dragan78]

Hi! I have a VDO dash from an Audi A6 2002 code 4B0920933G with MCU Micronas CDVV1303 M727 in which I wrote a wrong dump to 93c86 eeprom. Since then no light on MFD. I have ori backup from eeprom and I tried to wrote directly to eeprom on programmer, but no use. So I am sure that flash from this MCU is corrupt. I read about those MCU that are WDC core based.
I cant find any pinout for this MCU.
So I think if I delete Rom from this MCU I can solve my problem, but I do not know how to do it and what tool can do it?

[exe123]

The micronas is fine. Your problem is the encryption of the dump. Your OBD file is decyrpted. You will need to find a matching encrypted dump which you write by programmer to the eeprom

[Dragan78]

I have writen an ori encrypted file in eeprom with programmer but when give power to dash the content of eeprom changed totaly and the same the dash dont work

[exe123]

There are around 16 different versions. With byte flip 32 possibilities. You need to try all different crypto masks until dash is working. There is not just one original file...