# Firmware Update Guide

### <mark style="color:blue;">Overview</mark> <a href="#updating" id="updating"></a>

OnLogic offers a simple utility for updating the microcontroller firmware on your Karbon 300 or Karbon 700 series computer. You can find versions for both Windows and Linux systems below.

*Note: You can also update your system firmware using the* [*Karbon command line utility*](https://static.onlogic.com/resources/firmware/utilities/karbon_util_1.0.1_10282020.zip)*‘s ‘update’ subcommand.*

| Binary Version       | Link to Download                                                                                  | Changelog                                                                                                                          |
| -------------------- | ------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Karbon\_v3.2.1.3.bin | [**Download**](https://static.onlogic.com/resources/firmware/binaries/karbon/Karbon_v3.2.1.3.bin) | Fixes an issue that prevents the MCU from being used in Windows.                                                                   |
| Karbon\_v3.2.1.2.bin | [**Download**](https://static.onlogic.com/resources/firmware/binaries/karbon/Karbon_v3.2.1.2.bin) | Fixes an issue which caused the microcontroller to stop responding if it was receiving CAN traffic while the system was shut down. |
| Karbon\_v3.2.1.0.bin | [**Download**](https://static.onlogic.com/resources/firmware/binaries/karbon/Karbon_v3.2.1.0.bin) | —                                                                                                                                  |

### <mark style="color:blue;">Windows</mark> <a href="#windows" id="windows"></a>

* Download [karbon\_update.exe](https://storage.googleapis.com/ls-public-web-content/resources/firmware/utilities/karbon_update.exe)
* Download the latest Binary Version from above
* Open a command prompt, navigate to your downloads, and run:

```
karbon_update.exe Karbon_v3.2.1.3.bin
```

### <mark style="color:blue;">Linux</mark> <a href="#linux" id="linux"></a>

* Download [karbon\_update](https://storage.googleapis.com/ls-public-web-content/resources/firmware/utilities/karbon_update)
* Download the latest Binary Version from above
* Open a command prompt, navigate to your downloads, and run:

```
chmod +x karbon_update && sudo ./karbon_update "some_update_binary.bin"
```

You can also do all of the above in one line:

{% code overflow="wrap" %}

```
wget http://static.onlogic.com/resources/firmware/utilities/karbon_update https://static.onlogic.com/resources/firmware/binaries/karbon/Karbon_v3.2.1.3.bin && chmod +x karbon_update && sudo ./karbon_update Karbon_v3.2.1.3.bin
```

{% endcode %}