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Thread: 2011 OS upgrade to 2012 OS

  1. #1
    New Member
    Join Date
    Oct 2011

    Post 2011 OS upgrade to 2012 OS

    I have a 2011 pickup with an E78 I would like to update to a 2012. I have an upload from a 2012 of identical configuration. I continually get an error $0540 - Operating system mismatch.

    Has anyone been able to do this performing a full flash?

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003


    That error means that the OS is not compatible with the ECM.

  3. #3
    Lifetime Member
    Join Date
    Mar 2006


    And if you do flash it, you will guaranteed brick your ECM. Thats why this check is in place, some OSs for the Gen IV controllers cannot be put in different hardware.
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  4. #4
    Forum tyhee Site Admin GMPX's Avatar
    Join Date
    Apr 2003


    It's always best to check on CalID to see what the latest update for your vehicle is, even if you could go to a 2012 OS, it might cause problems with other modules in the truck.
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.

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