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Factory reset
=============
If something unexpected happens and your ESP32-based board no longer boots
MicroPython, then you may have to factory reset it. For more details, see
:ref:`soft_bricking`.
Factory resetting the MicroPython esp32 port involves fully erasing the flash
and resetting the flash memory, so you will need to re-flash the MicroPython
firmware afterwards and copy any Python files to the filesystem again.
1. You will need the Espressif `esptool`_ installed on your system. This is the
same tool that you may have used to initially install MicroPython on your
board (see :ref:`installation instructions <esp32_flashing>`).
2. Find the serial port name of your board, and then use esptool to erase the
entire flash contents::
esptool.py -p PORTNAME erase_flash
3. Use esptool to flash the MicroPython file to your board again. If needed,
this file and flashing instructions can be found on the `MicroPython
downloads page`_.
.. _esptool: https://github.com/espressif/esptool
.. _MicroPython downloads page: https://micropython.org/download/?port=esp32
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