Before you can transfer any files, your computer needs the correct software and drivers to communicate with the SCT X4.
Once the software recognizes your device, follow these steps to transfer the files: How to Load a Custom Tune Using Device Updater how to download tune to sct x4
: Run the installer and follow the prompts to install both the software and the necessary USB drivers. Before you can transfer any files, your computer
Note: Ensure your vehicle is returned to its "Stock" tune before performing firmware updates. To download a custom tune to your SCT
To download a custom tune to your SCT X4, you must first install the software on a Windows PC, connect your device via USB, and use the software to transfer your emailed .cef or .ll3 tune files to the device. 1. Preparation and Software Installation
: Use the provided Micro-USB to USB data cable to connect the SCT X4 to your computer.
: Visit the SCT Support Page and download the SCT Device Updater software.