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Thread: Problem reverting back to V5 update.

  1. #1

    Default Problem reverting back to V5 update.

    After updating to V6, and going back to updating V5, I'm having a problem:!AhVBMZsIxZvbgZAoFnXFISjyKijFbA
    Last edited by naif; 02-03-2021 at 01:46 PM.

  2. #2


    I see a blank screen and an orange to elaborate? Andrew

  3. #3


    I can't get another screen.

  4. #4


    Hard to say what it can be, since you're not providing many details. Going forward or backward with firmware is a pretty straightforward process. Andrew

  5. #5


    After rolling back to update V5, a white screen appears:
    Click image for larger version. 

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    Last edited by naif; 02-07-2021 at 04:14 PM.

  6. #6


    Is the ECU firmware and the EFI software matching? Did you download the complete V5 Build 171 file set?
    Instagram: @projectgattago
    Offering remote Holley EFI tuning.
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  7. #7


    Yes, that's what I did.

  8. #8


    I suspect something is wrong with your laptop. Andrew

  9. #9
    Join Date
    Dec 2009

    Default (EFI Software/ECU Firmware Problems)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  10. #10


    Updated to version 5.0.32, but computer is very slow.

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