Beta release · reliable public update hosting for future releases.
Use at your own risk. Keep your original BIN, verify table definitions and values for your ECU, and review every change before flashing. A valid checksum does not mean a tune is safe.
Download for macOS Download for Windows Download for Linux (Debian/Ubuntu, x86-64) Linux tarball
Spool now checks its update feed and downloads signed installers from this Cloudflare Pages site. Release files are uploaded directly from the Mac. Builds through 26.9.1 still check the old GitHub Pages address, so install 26.9.2 manually once from this page. Later updates will appear in the app.
The macOS DMG is Developer ID signed and notarized. The Windows app and installer are signed and timestamped under WLAN GEEKS LLC. Linux packages are built natively on the Linux NUC. Spool verifies downloaded installer size and SHA-256 before opening it.
For the T3 calibration, checksum, table, and editing changes in the previous release, see Spool 26.9.1 notes.