.. _changelog_v4_2_3:

v4.2.3
======

v4.2.3 is a small release: a TensorFlow output-scaling fix for uint8/int8
models and an RTC accuracy improvement on the OpenMV Pure Thermal. It
introduces **no breaking API changes** — v4.2.2 scripts run unchanged.

.. contents:: On this page
   :local:
   :depth: 1

Highlights
----------

- **Correct TF output scaling** for uint8/int8 models.
- **OpenMV Pure Thermal** — accurate RTC via the low-speed external
  oscillator.
- **No breaking API changes** — reflash and your v4.2.2 scripts run
  unchanged.

Bug fixes
---------

- Fixed TensorFlow model output scaling for ``uint8`` / ``int8`` output
  tensors, correcting inference results for affected models.

Hardware and board support
--------------------------

- **OpenMV Pure Thermal** — enabled the RTC low-speed external (LSE)
  oscillator for an accurate real-time clock.

Breaking API changes
--------------------

v4.2.3 introduces **no breaking Python API changes**. Scripts that ran on
v4.2.2 run unchanged on v4.2.3 — just reflash the firmware. (Note: models
that relied on the previous, incorrect uint8/int8 output scaling will now
return correctly-scaled values.)