> For the complete documentation index, see [llms.txt](https://px4.gitbook.io/px4-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://px4.gitbook.io/px4-user-guide/drone_parts/complete_vehicles/holybro_kopis2.md).

# Holybro Kopis 2

The [Holybro Kopis 2](https://holybro.com/products/kopis2-hdv-free-shipping) is a ready-to-fly race quad for flying FPV or line-of-sight.

![Kopis 2](https://4155462212-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LArEa7z2SPawfl3HpCD%2Fuploads%2Fgit-blob-299f8d434f21b16111e0aa6fadb2c05cac650b53%2Fholybro_kopis2.jpg?alt=media)

## Where to Buy

The *Kopis 2* can be bought from a number of vendors, including:

* [Holybro](https://holybro.com/products/kopis2-hdv-free-shipping)
* [GetFPV](https://www.getfpv.com/holybro-kopis-2-fpv-racing-drone-pnp.html)

In addition you will need:

* An RC transmitter. The *Kopis 2* can ship with an FrSky receiver or no receiver at all.
* LiPo battery and charger.
* FPV goggles if you want to fly FPV. There are many compatible options, including these ones from [Fatshark](https://www.fatshark.com/product-page/dominator-v3). You can also use DJI FPV goggles if you have the HDV version of the Kopis 2.

  :::note FPV support is completely independent of PX4/flight controller. :::

## Flashing PX4 Bootloader

The *Kopis 2* comes preinstalled with Betaflight.

Before loading PX4 firmware you must first install the PX4 bootloader. Instructions for installing the bootloader can be found in the [Kakute F7](/px4-user-guide/drone_parts/flight_controller/autopilot_discontinued/kakutef7.md#bootloader) topic (this is the flight controller board on the *Kopis 2*).

:::tip You can always [reinstall Betaflight](/px4-user-guide/advanced_config/bootloader_update_from_betaflight.md#reinstall-betaflight) later if you want! :::

## Installation/Configuration

Once the bootloader is installed, you should be able to connect the vehicle to *QGroundControl* via a USB cable.

:::note At time of writing *Kopis 2* is supported on the QGroundControl *Daily Build*, and prebuilt firmware is provided for the master branch only (stable releases are not yet available). :::

To install and configure PX4:

* [Load PX4 Firmware](/px4-user-guide/config/firmware.md).
* [Set the Airframe](/px4-user-guide/config/airframe.md) to *Holybro Kopis 2*.
* Continue with [basic configuration](/px4-user-guide/config.md), including sensor calibration and radio setup.