The Lappy release archive, newest documented build first. Candidates are not offered as stable updates. To check your device’s installed version, connect it on the Update page.
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.
Improves custom circuit completion, stabilizes numeric typography and preserves richer session/VBO metadata. Existing courses, settings and pairing keep their formats. Receiver/driving and external-import acceptance remain separate.
Bounded UBX parsing, receiver identity logs, separate configuration ACK/NAK and measured-cadence reporting, plus GPS rejection counters. Installed-device and SD checks passed; live receiver and driving acceptance remain pending.
Preserves unreadable save generations, rejects contradictory GPS timing evidence, and coordinates export cancellation and shutdown. Wi-Fi bench checks are recorded separately; live receiver acceptance remains distinct.
Adds discovery and provisional rate setup for DRG70/DRG70-C and Lite. Actual GPS cadence remains measured; these receiver models still require physical acceptance.
Persists the device-specific export network and random eight-digit password across restarts. Export follows recording; stop Wi-Fi before a new recording.
Supersedes the failed 0.7.0 candidate with hardware memory corrections and a no-Dragy Wi-Fi bench check. Adds circuit/P2P session export while preserving previous data.
Do not install this original binary: physical startup exposed internal-memory failures. It was superseded by 0.7.0+hw1; retained notes document the original candidate.
Rename and delete custom tracks on the device or over USB. Names preserve timing identity; deletions archive results first. Factory templates are protected.
Track Session compares historical rows against the current course PB, keeping best-result badges and improvement deltas consistent in Classic and Race.
Completes the Race palette correction with neutral black/gray menu and Track-setup surfaces. Warning, fault and timing colors keep their meaning.
Race uses white decorative accents in shared settings and Track setup screens. Returning to Classic restores its original amber accents.
Adds the optional Race instrument theme and a Clock companion. Classic stays the default; time remains manually set, without GPS synchronization or timezone changes.
Refines the built-in Erdos start/finish from an independently recorded session. Reported agreement is with that recording, not a standalone timing-accuracy guarantee.
Custom route recording holds position while stationary instead of accumulating GPS wander. Movement requires sustained velocity and position evidence.
Requests the RAM-only 40 ms GPS interval on positively identified DRG71 receivers and verifies actual receiver cadence after connection or repair.
Adds incremental recording checkpoints and lifecycle markers, restoring interrupted recordings stopped for review, resume or discard.
Improves GPS readiness and custom Track editing. Five satellites are accepted with a valid 3D fix and the retained accuracy and continuity checks.
Makes STOP and CANCEL unconditional and repairs moving custom-route recovery. Partial routes can be resumed or discarded without restarting.
Fixes the observed route-validation watchdog reset and supports courses up to 50 km and 8,192 geometry points with cached validation.
Requires 60 ms of clear contact before accepting a normal finger lift, preventing brief empty touch reports from repeating held actions.
Retains Track widgets and redraws changed regions, with a dedicated display-transfer worker and optional second DMA staging buffer.
Adds Guangdong International, Chengdu Tianfu, Erdos and Beijing Goldenport. The catalog reaches nine factory templates plus eight custom slots.
Adds the red BMW E30 M3 exterior and cabin views. A short PWR press cycles Instrument → Exterior → Cabin; startup always opens the instrument.
Drag displays zero at a confirmed stop and waits for sustained raw GPS movement before publishing standing-start results, retaining their original onset and distance.
Fixes the confirmed receiver-setup stack overflow and zero-GPS-packet failure while retaining timing thresholds and startup behavior.
Fixes an unbounded BLE recovery loop from road logs and aligns the first status read with the working capture sequence. This build was packaged for testing.
Removes runtime LAPPY/DEMO badges and improves storage-delay, interrupted-GPS and failed-shutdown-save handling on V2 Rev1.1.
Adds a 100 ms dark settling interval after transferring the logo, reducing the second startup flash while retaining normal startup.
Packages the tested V2 early-blanking bootloader with the existing application behavior. Very brief initial power-on flashes remained possible.
Addresses evidenced telemetry startup/stall problems and potentially blocking work following road captures with no GPS notifications.
Delays application backlight reveal until a valid frame is drawn, addressing a confirmed startup ordering issue. Initial power-on flashes still required investigation.
Restores the five factory templates in Track simulator scenarios so the documented course-selection flow is available.
Adds Tianma, Zhejiang, Zhuhai, Shanghai International and Ningbo factory course templates. Course selection remains explicit and timing starts disarmed.
Trip distance and moving time follow the stationary detector, preventing parked GPS noise from accumulating as travel.
Street speed settles to zero when sustained low-speed GPS noise is consistent with being stationary. Raw telemetry and timing inputs are retained.
Uses 40%, 60%, 80% and 100% brightness, defaulting to 60%. Older saved values normalize to the supported range.
Corrects active-low backlight PWM handling after the first V2 bench test. Timing engines and instrument layouts are retained.
Adds circuit and point-to-point timing, directional crossings, up to two splits, personal bests and live delta against a valid recorded reference.
Track adopts the same mode, page and status widgets as Street and Drag without changing their established positions.
Keeps SES. BEST on one line and aligns Track captions with their values and the shared driving status strip.
Introduces the Track timing, map, session and course-setup interface, including recording, gates and splits.
Removes idle RTC status text. Manual date/time, 12/24-hour selection and real save-failure reporting remain available.
Removes power-source indicators from the header. Hold PWR to save and shut down; unplugging USB continues on battery, without automatic shutdown.
Simplifies Drag to seven tests, improves strip-display readability and adds a manually set calendar and battery-rail sensing. Physical acceptance was pending.
Adds the shared firmware/simulator Drag timing engine. Track session improvements show faster-than-best results in green.
Street, Drag, Track and Settings adopt the 640 × 172 instrument layout with a shared status strip.