1. Click Export UF2 to download the patch as a .uf2 file.
2. Put Octane in bootloader mode: with the device switched off, press and hold the reset button with a toothpick, then switch Octane on.
3. Octane shows up on the computer as a USB drive. Drag the .uf2 file onto that drive.
4. Octane restarts with the new patch. If both LEDs blink 5 times, the patch has an error and Octane uses the default routing instead.

The page checks the patch with the same rules as Octane. Errors, in red, make Octane reject the patch. Notes, in orange, point at blocks that are not fully wired. Click the problem count in the status bar to go from one to the next. The patch format is described in the README.