How to Update Your Terminator X EFI Firmware

Keeping your firmware updated is always a good idea if you're continuously making changes to your tune because you're upgrading the car, adding components to your system, or just chasing down a number or drivability optimization. Follow the instructions in this video to upgrade your firmware properly!
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[@kimberjones9968]

Stumbled upon this video. Great info and saved my ass. Thanks

[@SloppyMechanics]

Awesome work with these videos

[@HolleyPerformance]

Thanks!

[@Matt-df5fe]

thanks for the video, just updated my TermX, worked flawlessly and took 5 mins

[@Gillettesgarage]

Thanks dude you save me alot of frustration.

[@marcanthonysuazo]

i have a HOLLEY EFI TERMINATOR X STEALTH GM LS 4150 i bought it in spring 2022 before i do initial start up for 1st time do you recommend i do this and up date the 3.5 display and ecu firmware to current version?

[@theshark2804]

I’m in the same situation. I have a stealth that I’m getting ready to start. I took the ss card and I’m trying to figure this thing out

[@drjoe2323]

Handheld worked perfect ecu not so much errors out smh count your days holley

[@kevinwest3689]

If going from 2.0 to 3.0 update. Do you skip download from Ecu &save GFC as. Because you already renamed and downloaded tune for 2.0 upgrade.

[@DXB9993]

Thanks for the videos ... will be nice if you put a video for how to set up the camshaft

[@HolleyPerformance]

We'll add it to the list!

[@DXB9993]

HolleyPerformance thanks 🙏 .. Another idea ... if you put a small clips of each setup that would be easier for your followers to room around in your channel and finding the right information for their needs.

[@markc01835]

thanks for the help!

[@chrisbueschel3884]

jeez how often will I have to go through this PITA process? every 3 months? every year?

[@1etergen]

Best terminator x video on UA-cam!! Great job. I’m a subscriber

[@jasaanarruda6800]

Easy, thanks

[@Bmwlover4life]

just did this in mine, however after attempting to flash to ecu it says "ECU firmware upgrade failed"

[@skylergaitan]

Did you find out how to do it

[@Bmwlover4life]

@@skylergaitan just had to reload firmware and try again, make sure you actually eject the proper way.

[@martinramos9078]

Every time I down load the new gfs..the ecu shows that it's on the stock fox tune..oh I'm running the sc tune..for a fox

[@jerrydziura7509]

I get a Folder create error (13) when trying to download the tune from the ECM. How do I get passed that?

[@coldbeerracing]

Can’t I just update from lab top using the sync drop down?

[@HolleyPerformance]

You can, but this is faster and less likely to be interrupted.

[@bjl592000]

I did this step by step now I get the error "Global ICF Local 3, ECU2" Wehn I try to upload my old tune

[@NoLimitJrod]

I’m having the same issue did you ever figure it out ?

[@bjl592000]

So go ahead and take your current tune that you have on your SD card and open that file globally in the Terminator software on your desktop or laptop and will automatically upgrade your tune to the version. 3. So it's compatible.

[@blackwellm23]

When is the firmware update coming to enable people to choose "map pressure" under boost>system setup>control method dropdown. You've posted on Facebook and asked what needs to be changed and this the topic of map pressure dropdown selection was overwhelming. What else do you need to hear to make it happen? Holley efi is down right awesome. Make it more awesome by listening to the people that use it

[@SloppyMechanics]

Mad Mike's Garage (MMG) not soon enough lol

[@purge_s1977]

Will I unupdated firmware cause car not to start

[@trippettd123]

So in order to update the handheld and the ECU I have to disconnect the prodash?

[@cutoversoldspartsguys3377]

did you remove the prodash before you updated your software?

[@Curt92teg]

Got all the way to updating the ECU and it says ECU not found. What am I doing wrong??

[@random5064]

Did you find a fix?

[@Shouganaigarage]

Why does no one show how to do it without a handheld?

[@CharliesMustangShop]

How do you do it with handheld??

[@Shouganaigarage]

@@CharliesMustangShop watch the video

[@nickmusgrove6268]

What if your running a dash too

[@HolleyPerformance]

we recommend unplugging the CAN connection on the dash while you're doing a firmware update

[@jonathanpalahitski9596]

Is there gonna be a terminator x for the GM 6l80e

[@HolleyPerformance]

Keep an eye on our website for new product releases!

[@jonathanpalahitski9596]

@@HolleyPerformance sweet thanks

[@wesbuilds5293]

i can't remove any files from my sd card...

[@HolleyPerformance]

Make sure the little lock tab on your SD card hasn't moved.

[@wesbuilds5293]

@@HolleyPerformance thanks for the tip, got it figured out not long after i posted. although the handheld is still making DLZ files and the terminator x software on my laptop won't read it until I move the files to a different folder and decompress them to a DL file

[@lwjw3184]

Dude, you have done this before so you don’t realize how fast you are going through this stuff.
It is very difficult to keep up with you. I’ve had to pause and rewind like 10 times already lol……. If you do another video like this, slow down so some of us novice computer people can keep up 😂