Jun 19, 2024 · I was going through the process to update the firmware on a Terminator X Max car in the shop, before I moved onto tuning. The process failed while uploading the BAM Header.

Nov 5, 2023 · I wanted to post this to help others who have a Terminator EFI system (not Terminator X, which is different), and want to update the firmware from older versions prior to V5 since Holley does …

Dec 7, 2022 · The instructions (PDF file) & ECU firmware (.eep file, Firmware folder/Documents) are included in the EFI software download. Go to your "Documents", "Holley" folder, "Terminator X V2" …

A V3 calibration cannot be loaded into a V1 or V2 ECU. A Terminator X V1 or V2 calibration cannot be used in a Terminator X ECU with V3 Firmware. The 3.5” TSLCD can be used to update the ECU & …

Jan 9, 2022 · What's the proper way to update my ECU firmware if I only have a laptop (no handheld). I've searched everywhere and can only find handheld instructions. Just got my ECU back from Holley …

Aug 29, 2024 · Hey guys, I'm new to Holley EFI and I'm having a problem getting my old GCF file to load to the ECU after I just successfully updated the firmware to V3 on my Terminator X system. I …

Apr 22, 2023 · I did a firmware update following the Holley instructional video with the guy that has the black Mustang from Texas. Somehow when I drug my saved files from the desktop back into the …

Apr 28, 2023 · When updating the firmware on a Terminator X ECU, there should not be anything else on the CAN Bus, except the USB to CAN cable for the laptop. In my experience, if an ECU firmware …

Mar 23, 2025 · I'm trying to unbrick my Terminator X Max. It's showing no ECU communication after the battery was unhooked for the winter. It shows multiple files on the SD card. I tried uploading the …

Jul 6, 2016 · I'm not aware of "many others" having problems with the ECU firmware update process. My Terminator has firmware 000562 so I assume pre-version 2? No, that's an old version of the V2 …