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Thread: LBZ read error

  1. #1
    Junior Member
    Join Date
    Jun 2004

    Default LBZ read error

    I just attempted to read a 2006 LBZ. I have the 7.3 build 555 software and a V2. The connection went fine, status verified as a LBZ and it began downloading the tune. When it finished, it immediately gave an unknown bin file error and named the file: BadFileFormat.tun

    Do I need to email this tune file in?

    Richard -
    2008 Trailblazer SS - TVS1900

  2. #2
    Forum tyhee Site Admin GMPX's Avatar
    Join Date
    Apr 2003


    This error is usually caused by the wrong firmware in the V2 hardware.
    Here's how to check which version you have.

    Look in the folder '\Program Files\EFILive\V7'
    Then run the program called "EFILive_Firmware.exe"
    Grab your V2, unplug both the vehicle plug and USB if they are connected.
    Hold down the 'Ctrl' key and plug the USB cable in.
    The V2 should power up and two orange LED's will cycle back and forth.
    Now turning to the EFILive_Firmware.exe program.
    Press the status button.
    It should return some data about the V2 unit, one of the fields is the firmware version. It must be 2.04.47, if it is not then you need to update.
    To do that, simply click on the Browse button (circled in Green), and load the file located in the '\Program Files\EFILive\V7' folder still called -
    Once that is loaded, press program, then you should be right to go.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    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.

  3. #3
    Junior Member
    Join Date
    Jun 2004


    I'll give that a shot. I had seen other posts referring to a firmware update, but didn't know exactly what it was. I'm sure that will take care of the issue. I'll respond back if I have further difficulties. Thank you.
    Richard -
    2008 Trailblazer SS - TVS1900

  4. #4
    EFILive Distributor Trippin's Avatar
    Join Date
    May 2004


    One of the most common mistakes I have seen is for the user to hold down the "cntrl" button on the PC keyboard when trying to put the V2 into dead poll mode for a firmware update.

    The correct button to hold down is the "cntrl" button on the V2 unit. Look for the two blinking amber lights to be sure you are in the right mode with the V2.

    EFILive-DSP5......Switch your Attitude!
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