> For the complete documentation index, see [llms.txt](https://documentation.hak5.org/screen-crab/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.hak5.org/screen-crab/getting-started/2024-ssl-update.md).

# 2024 SSL Update

Let's Encrypt has been phasing out the X3 certificate chain. This change requires applying a one time update to your Screen Crab if you plan to use Cloud C2 with HTTPS.\
\
This process from start to finish should only take a few minutes. 

## Download the update

The fix is a simple script available for download here: <https://downloads.hak5.org/crab>

{% hint style="danger" %}
This `autoexec.txt` is meant only to be executed on your Screen Crab
{% endhint %}

## Applying the update

1. **Power off** the Screen Crab
2. **Eject the microSD** card and attach to your host machine via card reader
3. **Copy** the `autoexec.txt` downloaded from downloads.hak5.org to the **root of the MicroSD card**
4. **Safely eject** the MicroSD card from your host machine
5. **Insert the MicroSD** card back into your Screen Crab
6. **Power the device on**
7. **Done!** \
   \
   The script will automatically remove itself upon completion. If your Screen Crab is already registered to your Cloud C2 server, the device should now be online. Additionally an `upgrade.log` will be created on the root of the MicroSD card to add an additional indication of success.&#x20;