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.

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.)