Updating your firmware using the EFI Shell is straightforward and safe when done carefully.

Follow this step-by-step guide to prepare your USB drive, enter the EFI Shell, and complete the update.

⚠️ Note: You’ll need a USB Flash Drive with at least 8 MB of free space to perform this update.

Make sure your laptop is plugged into its charger before starting.

## 1) Download the Firmware

Download the firmware file for your specific model from [here](https://github.com/StarLabsLtd/firmware). Firmware files are stored in folders named according to the model. For example, for the StarBook Mk IV, the files are in `StarBook/MkVI-Intel/` and the file you need is `efi-B6-I.zip`.

![Download](https://hsfiles.gorgias.help/gm/help-centers/103278/attachment/75efe3ed-bdaa-4a37-a35c-8c8a682b1263.png)

## 2) Extract the Firmware Files

After downloading the file, right-click it and select `Extract Here`.

![Extract](https://hsfiles.gorgias.help/gm/help-centers/103278/attachment/5d70e1a5-0500-40aa-9dac-dec4e3bcffb2.png)

Open the extracted folder, select all files and folders using the mouse or by pressing `Ctrl` and `A`. Right-click and select `Copy`.

## 3) Prepare the USB Flash Drive

Your USB drive must be formatted in FAT32 format.

Open your distribution's disk manager. You can typically find it by searching for **disks**. The process is similar across most distributions. In Ubuntu, select your USB drive and click the `-` sign to remove the current partition.

This action will delete all data on the drive. After removing the original partition, the `-` sign will disappear and a `+` sign will appear. Click the `+` and set the Type to FAT. You can choose any name for the Volume Name.

![](https://attachments.gorgias.help/dY4gQxz89KY2Wnv8/hc/MNVgn6mnLMN21j8B/2025102312-4764d191-32bc-4eb2-8014-80bad137914a-format.webp)

Once complete, locate your USB drive. Open it, right-click, and select Paste. The contents should resemble the image below.

![Files](https://hsfiles.gorgias.help/gm/help-centers/103278/attachment/bf54958e-15fe-4009-8cbe-6a2a4b7f64b5.png)

## 4) Boot into the EFI Shell

1. Keep the USB drive connected.

2. Connect your laptop charger.

3. **Shut down your laptop completely.**

4. **Power it back on** and enter the EFI Shell:

* For **AMI firmware**: Press `F2` (or `Fn` + `F2` if Function Lock is enabled) repeatedly until you see a blue boot menu.\
  Use the arrow keys to select `EFI Shell` and press `Enter`.

* For **coreboot firmware**: Press the key shown on-screen to open `Boot Manager`, then select `EFI Shell`.

## 5) Run the Update

Once you’re in the EFI Shell, the update will start automatically. The process usually takes **10 seconds to 5 minutes**.

⚠️ Do not turn off or restart your laptop during this process.\
Interrupting the update could make your device inoperable and require physical repair.

When the update finishes, your laptop will either **reboot automatically** or **shut down** - this is normal.

💡 **Tip:** Some BIOS updates may require multiple reboots. If prompted, repeat the steps above to boot into the EFI Shell again.