A firmware upgrade can be performed simply over USB without opening the
**FunKey S** console.

Get the latest "**_FunKey-rootfs-x.y.z.fwu_**" firmware update file
directly from [here][1] or from the bottom of the latest release page
in the "assets" section:

https://github.com/FunKey-Project/FunKey-OS/releases/latest

![Github Release](/assets/images/Github_Release.png){: .lightbox}

| **Display**                                                                       | **Action**                                                                                                                  |
|:---------------------------------------------------------------------------------:|:----------------------------------------------------------------------------------------------------------------------------|
| ![Connection PC](/assets/images/Connection_PC.png){: .lightbox}                   | Connect the **FunKey S** to your computer using the provided micro USB cable, then open it to turn it on                    |
| ![RetroFE](/assets/images/RetroFE.png){: .lightbox}                               | At the launcher's main screen (example here with RetroFE), press the **MENU** key                                           |
| ![Mount USB](/assets/images/Mount_USB.png){: .lightbox}                           | Press the **UP**/**DOWN** keys until you see "**MOUNT USB**"                                                                |
| ![Mount USB Are you sure](/assets/images/Mount_USB_are_you_sure.png){: .lightbox} | Press the **A** key twice to confirm                                                                                        |
| ![Eject USB](/assets/images/Eject_USB.png){: .lightbox}                           | "**EJECT USB**" is now displayed instead, now go to your host computer and open a File Explorer window                      |
| ![USB Drive](/assets/images/USB_Drive.png){: .lightbox}                           | You should see the **FunKey S** appear as an USB drive on your computer in the File Explorer (example here with Windows 10) |
| ![USB Drag and Drop](/assets/images/USB_Drag_Drop.png){: .lightbox}               | Drag & drop the _FunKey-roots-2.0.0.fwu_ file you just downloaded at the root of this USB drive on your computer            |
| ![Eject Drive](/assets/images/Eject_Drive.png){: .lightbox}                       | Eject cleanly the USB drive from your computer                                                                              |
| ![Eject USB Are you sure](/assets/images/Eject_USB_are_you_sure.png){: .lightbox} | Back on the **FunKey S**, at the "**EJECT USB**" menu entry, press the "**A**" key twice to confirm                         |
| ![Updating](/assets/images/Updating.png){: .lightbox}                             | The **FunKey S** will then reboot and perform the upgrade                                                                   |

[1]: https://github.com/FunKey-Project/FunKey-OS/releases/download/FunKey-OS-2.0.0/FunKey-rootfs-2.0.0.fwu

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