IDF Monitor follows the custom console baud-rate (:ref:`CONFIG_ESP_CONSOLE_UART_BAUDRATE`) by default instead of 115200. Setting a custom baud rate is not supported from menuconfig anymore. A custom baud-rate can be specified from command line with the ``idf.py monitor -b <baud>`` command or through setting environment variables. Please note that the baud-rate argument has been renamed from ``-B`` to ``-b`` in order to be consistent with the global baud-rate ``idf.py -b <baud>``. Run ``idf.py monitor --help`` for more information.
``idf.py`` sub-commands and ``cmake`` targets are unified to contain ``-`` instead of ``_``. The following changes have been made. Deprecated sub-commands and targets produce a warning. It is advised to migrate to the new ones.
The CONFIG_ESPTOOLPY_FLASHSIZE_DETECT option has been renamed to :ref:`CONFIG_ESPTOOLPY_HEADER_FLASHSIZE_UPDATE` and it is disabled by default. New and existing projects migrated to ESP-IDF v5.0 will have to set :ref:`CONFIG_ESPTOOLPY_FLASHSIZE`. If this is not possible because the flash size is not known at build time then :ref:`CONFIG_ESPTOOLPY_HEADER_FLASHSIZE_UPDATE` can be enabled but this will have the consequence of not appending a SHA256 digest after the image in order that the binary header could be updated with the flash size during flashing without invalidating the digest.
