Release Notes

OpenHaldex v0.9.3-beta

This beta promotes the Gen 5 port into a packaged release flow, adds MQB-aware mapping and CAN decode support, and publishes a matching web-installer manifest for the current ESP32-S3 build.

Release metadata

Field	Value
Version	v0.9.3-beta
Channel	Beta
Target hardware	LilyGO T-2CAN ESP32-S3
Primary install path	ESP Web Tools installer
Repository	github.com/meatro/openhaldex-s3

Highlights in this release

Adds Gen 5 Haldex support on the clean OpenHaldex-S3 codebase.
Switches Gen 5 chassis decoding to MQB instead of the older PQ signal set.
Extends mapped-input selection and CAN View decoding with MQB signal support for Gen 5 cars.
Publishes a matching `v0.9.3-beta` web-installer manifest and release asset bundle.
Updates docs so setup flow, FAQ, and developer references explain the Gen 5 / MQB path.

What changed functionally

The main functional change in this release is platform expansion. OpenHaldex now covers Gen 1, 2, 4, and Gen 5, with Gen 5 using MQB decoding for signal binding, live telemetry, and CAN View. That means Gen 5 cars can now select decoded speed, throttle, and RPM inputs from the correct chassis signal family instead of being forced through PQ assumptions.

This is a significant market expansion for the project, but it is still tagged beta because Gen 5 validation should continue on real vehicles and logs rather than being treated as a finished production release.

Packaging for v0.9.3-beta

release/
  firmware/
    v0.9.3-beta/
      bootloader.bin
      partitions.bin
      firmware.bin
      littlefs.bin
      version.json
      manifest.json
      checksums.txt
  manifests/
    v0.9.3-beta.json

The web installer references the versioned manifest so users can flash this exact artifact set without entering offsets manually.

ESP Web Tools mapping for v0.9.3-beta

The manifest for this release targets the ESP32-S3 flash layout currently defined in `partitions.csv`. Expected offsets:

bootloader.bin at 0x0000
partitions.bin at 0x8000
firmware.bin at 0x10000
littlefs.bin at 0x790000

Install and upgrade guidance

Read this page and confirm you want `v0.9.3-beta` specifically.
Open the web installer and select `v0.9.3-beta`.
Flash all required parts (`bootloader`, `partitions`, `firmware`, `littlefs`) as defined in manifest.
Power-cycle the device and open the UI.
Select the correct Haldex generation before mapping inputs.
If the vehicle is Gen 5, verify MQB-decoded speed, throttle, and RPM before any tuning.

Known notes for this beta

Gen 5 support is new and should still be validated carefully on real MQB vehicles.
Use conservative lock targets after flashing until telemetry and mapped inputs are confirmed coherent.
This release bundle matches the current partition map; do not reuse manifests across future partition changes.
Existing PlatformIO dependency/deprecation warnings remain build-time noise, not release blockers.

Support references for this version

Try the OpenHaldex Firmware Demo

Preview the real OpenHaldex firmware UI in your browser with simulated live CAN traffic and interactive pages for tuning, diagnostics, logs, setup, and OTA workflows.

Open firmware demo