---
title: "8.x to 9.0.x Upgrade Steps"
canonical: "https://docs.infoblox.com/space/niosupgrade/1320354079/8.x%20to%209.0.x%20Upgrade%20Steps"
format: markdown
---
To upgrade NIOS, perform the following steps:

1. Apply the NIOS-98022 hotfix. For more information, see [https://support.infoblox.com/s/article/How-to-recover-NIOS-from-old-certificate-related-issues](https://support.infoblox.com/s/article/How-to-recover-NIOS-from-old-certificate-related-issues)
2. [Download the new upgrade software](https://infoblox-docs.atlassian.net/wiki/spaces/niosupgrade/pages/1321074792).
3. [Upload the upgrade software to the Grid Master](https://infoblox-docs.atlassian.net/wiki/spaces/niosupgrade/pages/1320452482).
4. [Distribute the software upgrade files](https://infoblox-docs.atlassian.net/wiki/spaces/niosupgrade/pages/1320386965).
5. [Apply the 9.0.3.3 CHF3 hotfix](https://infoblox-docs.atlassian.net/wiki/spaces/niosupgrade/pages/1321042299) (if upgrading to 9.0.3) or [apply the 9.0.4.2 CHF2 hotfix](https://infoblox-docs.atlassian.net/wiki/spaces/niosupgrade/pages/1321042321) (if upgrading to 9.0.4)
6. Test the upgrade.
7. [Perform the actual upgrade](https://infoblox-docs.atlassian.net/wiki/spaces/nios90draft/pages/537756018).