> For the complete documentation index, see [llms.txt](https://help.smvend.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.smvend.io/equipment-installation/controllers/remote-firmware-update.md).

# Remote firmware update

Updating the SmVend telemetry controller remotely keeps your system up-to-date with the latest features and security updates. Here's how to do it:

1. **Request the latest firmware**\
   Contact SmVend technical support to have the latest firmware uploaded to your сontroller.
2. **Initiate the update**\
   Follow the instructions below for your SmVend controller model.

### How to initiate updates on Smart controllers

{% hint style="danger" %}
Remote firmware update for the SmVend Smart controller is only supported when **connected via a SIM card**. Connections through Wi-Fi or Ethernet do not support remote firmware updates.
{% endhint %}

{% embed url="<https://drive.google.com/file/d/1puVEInb2STgFoZmh_ldf1KCKgELk0jVm/view?usp=sharing>" %}

### How to initiate updates on Mini controllers

{% hint style="info" %}
SmVend Mini controllers can be remotely updated via SIM card or WiFi.
{% endhint %}

To initiate the update:

1. **Disconnect power**\
   Turn off the controller's power.
2. **Ensure Internet access**\
   Ensure the device can access the Internet via SIM card or Wi-Fi.
3. **Power on**\
   While holding the controller's button, turn the power back on. All four LED indicators will briefly light up. Then the POS indicator will turn off, and the LINK and ONLINE indicators will flash alternately with a duration ratio of 1 to 1.
4. **Enter bootloader mode**\
   The controller is now in bootloader mode — release the button. Once the controller is connected to the server, the LINK and ONLINE indicators will flash with a new pattern — the duration ratio will be 1 to 7.&#x20;
5. **Update is complete**\
   After downloading the update, all four indicators will light up continuously as the new software is installed. Once the installation is completed, the controller will automatically switch back to normal operating mode.


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