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Thread: Changing OS

  1. #1
    Tuner
    Join Date
    Mar 2015
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    gippsland
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    Changing OS

    hi all,
    i am wondering if there is any safe way to change a p01 pcm from OS 12202088 to 12225074?
    can a just write calibration or will it need a write entire if safe to do so?
    the 1220208 is out of a sedan calais and the 12225074 is an Adventra wagon which i am needing a backup pcm for.
    thanks for any help.

  2. #2
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
    Join Date
    Jun 2004
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    Hailing from Parts Unknown
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    26,371
    Write entire needs to be performed in order to change to a different operating system.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"