How to Virginise the DME or Duplicate ECU on BMW CAS3?

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No need for any virgin, just read ISN and write to CAS, and sync CAS DME done.  This is what people do in most cases.

Solution 1. Autel MaxiIM IM508 + GBOX or Autel MaxiIM IM608: No problem

If you have Autel MaxiIM IM508 and also GBOX. These questions are answered in Autel subscriptions. You have to have the gbox to put the msd80/msd81 on BENCH first, this is to read tri-core pw. Then note tri-core pw and download the Flash in BOOT mood this time. After that, you can change the DME ISN with an active Autel sub and use their tools. They have some of the Ediabas in the IM508, but they have full feature encoding with Autel MaxiIM IM608. If you are not flashing a supporting file or the DME you are replacing is the same as the original existing one. Then you will have to change sop8 EEPROM. You can read EEPROM out and change VIN, working hours, and possibly vmx/pwrclass (but if i remember right this is located in flash…) If both DME has the same power class, and vmax then you will have adapted the DME partially. The only thing you will be left with is encoding the new VIN. IF ONLY the last 8 of the VIN are different from between, then you are good. IF they are different then you will have to update flash VIN as well with any Ediabas setup. IF the power class is different you must have 0 working hours and change the power class with BMW “standard tools”.

Solution 2. Yanhua Mini ACDP host plus Module 1 for CAS: No problem

Easy way to replace DME for cas3/3+/3++ cars. No soldering.

No need to do DME clone until the ECU is broken. For this case you can use DIMSport New Trasdata to duplicated ECU. 

Only reads the Donor DME ISN, then write the ISN into the CAS3 via OBD or ICP!

Guide: Read the ISN from the replacement second-hand (used) DME and write this ISN into the CAS module by OBD or ICP mode. After ISN is written into DME, the original car key can still be used on this vehicle normally.


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