Lappy Updates

Keep your Lappy up to date.

Connect Lappy with a USB data cable. Before installing, this page backs up its internal flash to your computer.

Please make sure Lappy is turned off before updating.

Lappy R4 CAD
CheckingUSB firmware update

Checking the latest release…

Connecting becomes available once the release information is verified.

  • Your backup stays on this computer.
  • Backs up internal flash. SD-card files are not included.

Latest documented release · 0.8.1

Smoother track recovery. Clearer recording diagnostics.

Web release · see release notes for tested scope

Refines off-course detection, automatically starts the next circuit lap after recovery, and improves route recording diagnostics. Existing course identities, PBs and reference traces are retained. Browser update/recovery passed on macOS + Chrome; Windows and Edge remain unverified.

In this release

  • Off-course detection. Uses a 20 m default corridor and confirms a continuous excursion for at least one second of both GPS and arrival time.
  • Next-lap recovery. After an invalid circuit lap, good continuity and a fresh forward start/finish crossing start the next lap automatically.
  • Route recording. Confirmed movement can reconnect within 10 m of the last trusted position after a stationary hold; larger unexplained jumps remain blocked.
  • Recording diagnostics. JSON and VBO distinguish sample gaps, quality pauses, clock changes, position jumps and route breaks.
  • Saved data. Existing route geometry, identities, PBs and references keep their formats.
  • Validation scope. Recorded and synthetic replay tests passed; complete field laps and browser USB acceptance remain separate checks.

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