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    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

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    How to downgrade BMW CAS3 E90, read ISN from DME and change ISN CAS using CGDI Prog BMW key programmer.

    Keep stable power supply. Step 1: Downgrade CAS3

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Select CAS1-3+ Key Match

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Read Key Info. CGDI BMW require to downgrade current CAS versions. Press Yes to downgrade CAS3.

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Downgrade in process. Wait until it reads key information.

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Save backup EEPROM bin file Step 2: Read ISN Select  BMW ISN Read Write function

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Read CAS ISN

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Read CAS ISN success

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Copy and paste the original ISN to text file. Step 3: Write CAS ISN Enter the ISN DME you desired to change to CAS ISN area

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Press Write CAS ISN

    CGDI BMW Downgrade CAS3, Read and Change CAS ISN

    Write CAS ISN successfully. http://www.obdii365.com/producttags/cgdi-bmw.html

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