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Thread: Problem reverting back to V5 update.

  1. Default

    Out of curiosity, what was wrong with V6?
    Ah, I see it appears to be the "white screen" issue: HP Update Problems (

  2. #12


    Quote Originally Posted by Danny Cabral View Post (EFI Software/ECU Firmware Problems)
    I noticed that the update only takes 2 minutes, knowing that it may take 19 minutes on another ECU. Issuing the ECU:
    Click image for larger version. 

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    Last edited by naif; 03-01-2021 at 05:48 AM.

  3. #13


    I'd call Holley tech service and arrange to have your ECU sent back for testing. Andrew
    Instagram: @projectgattago
    Offering remote Holley EFI tuning.
    I deliver what EFI promises.
    Please get in touch if I can be of service.

  4. #14


    Mr. andrewb70, is there a solution to this problem? I've updated another electronic controller and haven't encountered this problem.
    Click image for larger version. 

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  5. #15


    It's impossible for me to say, one way or the other. This is why I suggested you call Holley tech support and arrange to have the ECU tested. Andrew

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