---
title: "UEFI Upgrade/Downgrade"
slug: "uefi-upgradedowngrade"
updated: 2025-02-20T08:19:45Z
published: 2025-02-20T08:19:45Z
canonical: "docs.zpesystems.com/uefi-upgradedowngrade"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zpesystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# UEFI Upgrade/Downgrade

Nodegrid OSes version 5.0 or below are Legacy Only, which means those images are not capable of booting in a system configured for UEFI Boot Mode. In a system running one of those images can be upgraded to new versions but will still run in Legacy. To Upgrade a Legacy device with a new image in UEFI mode, the following procedure is required:

1. On a USB drive, copy the NG 5.X UEFI image  
 Or setup a PxE Server with NG5.X UEFI Netboot Tarball.
2. During installation, select Install Nodegrid formatting disk. ![](https://cdn.document360.io/763c5fb1-b9af-4ccd-9ad6-cf28ae4cd5a3/Images/Documentation/image-1678129292595.png)
3. After installation, refer to [Intrusion Prevention](https://docs.zpesystems.com/docs/intrusion-prevention-sub-tab).
4. Reboot the system.

### Enable Secure Boot (optional)

1. Go to *Security :: Services :: Intrusion Prevention*.
2. Select **Enable Secure Boot** checkbox.
3. Click **Save**.
4. Reboot the device.

Nodegrid OS version 5.1 and above are both Legacy and UEFI compatible.