.. _changelog_ide_v4_2_1:

v4.2.1
======

v4.2.1 is a maintenance release that refreshes the bundled OpenMV firmware to
v4.5.8 across every supported board. It remains based on Qt Creator 10.0.1, and
also adjusts the Windows code-signing script alongside the version bump. There
are no breaking changes.

.. contents:: On this page
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Highlights
----------

- **Bundled firmware updated to v4.5.8** for all supported boards, so the IDE
  ships the latest OpenMV firmware out of the box.

Other changes and improvements
------------------------------

- Updated the bundled **OpenMV firmware** from v4.5.6 to v4.5.8 for all
  supported boards (OPENMV2/3/4/4P/PT, ``OPENMV_RT1060``, Arduino GIGA, Nano
  RP2040 Connect, Nicla Vision, Portenta H7, and Nano 33 BLE Sense), including
  the ``firmware.bin``/``.dfu``/``.uf2``/``.hex``, UVC, and bootloader binaries
  (`4ef02d2a6 <https://github.com/openmv/qt-creator/commit/4ef02d2a6>`__).
- Stopped code-signing bundled ``.dll`` files on Windows in ``scripts/sign.py``,
  signing only ``.exe`` binaries to reduce per-signature costs
  (`9ff6990b8 <https://github.com/openmv/qt-creator/commit/9ff6990b8>`__).

Platform and tool support
-------------------------

- **Qt Creator base:** 10.0.1.
- **OpenMV IDE version:** bumped to 4.2.1
  (`85928e586 <https://github.com/openmv/qt-creator/commit/85928e586>`__).
- **OpenMV firmware:** v4.5.6 -> v4.5.8 for all supported boards.

Breaking changes
----------------

None. This release does not change any IDE workflows or behavior for existing
projects.