> For the complete documentation index, see [llms.txt](https://luadoc.edgetx.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://luadoc.edgetx.org/edgetx_2.4/introduction/getting_started.md).

# Getting Started

## Downloading OpenTX Companion

OpenTX Companion 2.2 is available for download at <http://www.open-tx.org/downloads.html>

## Updating firmware with Lua option selected

If you intend to use mixer scripts, when updating the firmware on your transmitter you need to make sure the `lua` option is checked in the settings for your radio profile (Main menu -> Settings ->Settings...) as shown below. This is not required if you only intend to run telemetry, one-time and function scripts, support for those is included by default.

Also note that the SD Structure path should contain a valid path to a copy of your transmitter's SD card contents, although that's not specific to Lua.

![Edit Settings dialog from OpenTX Companion](https://github.com/opentx/opentx-2-3-lua-reference-guide/tree/0d355d19f1961b689994cf78b84005864d33f9b5/companion-settings.png)


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