*************
Factory reset
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You can perform a factory reset by pressing the button inside the S32, S3 and all E32 Gateway models for 10 seconds.
If you have an old Premium II with the latest ESP8266 firmware 2.2.2b0 you can use a metal pin to shortcut pins D3 to D2 on the Wemos for 10 seconds.

If the above methods do not work, you have to upload the firmware again. See: :ref:`HERE <Updating or downgrading the Gateway firmware>`.

Where can I find the button?
============================

Gateway E32-V2
--------------

There is a small button on the top of the circuit board near the Espressif module called 'RST'. If you press it for 10 seconds, you device will restart and reset all settings to factory default.
The Gateway needs to be connected to power (EMS service jack, USB-C or 12V DC power supply) in order for the reset to work.

.. image:: ../images/hardware/ems-gw-e32-v2-reset-button.jpg
  :width: 400
  :alt: EMS Bus Gateway E32 V2 reset button

If you don't want to open the enclosure, just flash the firmware again via the USB-C connector.

Gateway S3 and S3-LR
--------------------

There is a small button on the bottom called 'RST'. If you press it for 10 seconds, you device will restart and reset all settings to factory default.
The Gateway needs to be connected to power (EMS service jack, USB-C or 12V DC power supply) in order for the reset to work.

.. image:: ../images/hardware/ems-gw-S3-reset-button.jpg
  :width: 400
  :alt: EMS Bus Gateway S3 reset button

If you don't want to open the enclosure, just flash the firmware again via the USB-C connector.

Gateway S32 V2.0
----------------

There is a small button on the bottom called 'RST'. If you press it for 10 seconds, you device will restart and reset all settings to factory default.
The Gateway needs to be connected to power (EMS service jack or 12V DC power supply) in order for the reset to work.

.. image:: ../images/hardware/reset-button-on-s32-v2.jpg
  :width: 400
  :alt: EMS Bus Gateway S32 V2.0 reset button

Gateway S32 V1.0
----------------

There is a small button right next to the USB connector called 'IO0'. If you press it for 10 seconds, you device will restart and reset all settings to factory default.
The Gateway needs to be connected to power (EMS service jack, Micro USB or 12V DC power supply) in order for the reset to work.

.. image:: ../images/hardware/ems-gw-s32-reset-button.JPG
  :width: 400
  :alt: EMS Bus Gateway S32 reset button

Gateway E32
-----------

There is a button on the board called 'reset' or 'button'. If you press it for 10 seconds, you device will restart and reset all settings to factory default.
The Gateway needs to be connected to power (EMS service jack or 12V DC power supply) in order for the reset to work.

.. image:: ../images/hardware/ems-gw-e32-reset-button.JPG
  :width: 400
  :alt: EMS Bus Gateway E32 reset button

Gateway Premium II and older
----------------------------

The Gateway Premium does not have a reset button. Although there is a button on the Wemos called 'reset', it's actually just a reboot button.
Pressing it will only restart the Wemos, it does not reset anything.

If you are on firmware 2.2.2b0 you can use a metal pin to shortcut pins D3 to D2 on the Wemos for 10 seconds to reset EMS-ESP.
The Gateway needs to be connected to power (EMS service jack or Micro USB) in order for the reset to work.