Install
FastECU is available for Windows and Linux.
Which build do I need?
| System | Package | Notes |
|---|---|---|
| Windows 10 or later | Installer (.exe) | A 32-bit program. Almost all J2534 device drivers are 32-bit libraries, which a 64-bit program cannot load, so FastECU is 32-bit on purpose. It runs fine on 64-bit Windows. |
| Windows 7 / 8 | Separate Windows 7 installer | Has everything except the AI assistant, which needs a newer runtime (its settings tab is greyed out and says so). |
| Linux | AppImage | Make it executable (chmod +x) and run it. |
Install
- Download the build for your system from the download section of this site.
- Run the installer (Windows) or the AppImage (Linux).
- Start FastECU. A splash window shows while settings, vehicle and logging state load, then the main window opens.
- Continue with account and license key.
Where FastECU keeps your files
On first start FastECU creates its folders for calibration files, datalogs, system logs and disassembler projects, plus a folder for each definition source. They are in %LOCALAPPDATA% on Windows and ~/.config/fastecu-electron on Linux, and you can change each one in Settings › Files.
Updates
- FastECU checks for a newer version while it starts and then every 6 hours. When one exists, an Update button appears and the update dialog shows the new version and its notes.
- Help › Check for Updates checks on demand.
- Installing downloads the new installer, verifies its checksum and its signature (only releases signed with FastECU's release key are accepted) and, on Windows, installs it silently and restarts the app.
- Settings › Updates chooses the track: Stable (default) or Beta, which gets test builds first.
Reporting a problem
Help › About FastECU shows the version, build channel, platform and the update track, with a button that copies them for you. Paste that into your message on the forum or an email to info@fastecu.fi.