If you manage an HP ProLiant Gen8 or Gen9 server, you have likely uttered a specific string of curse words followed by a desperate Google search: “How to downgrade iLO 4 firmware.”
Modern browsers hate Java. Modern iLO 4 (v2.85+) increasingly relies on a buggy .NET or a slow, resource-heavy HTML5 interpreter. downgrade ilo 4 firmware better
For administrators of HPE ProLiant Gen8 and Gen9 servers, the Integrated Lights-Out 4 (iLO 4) is the backbone of remote management. While HPE regularly releases firmware updates to patch security vulnerabilities and add features, the "latest" version is not always the best, particularly for older, out-of-warranty hardware. If you manage an HP ProLiant Gen8 or
Upgrading to certain 2.50–2.55 versions can cause the iLO "Date/Time" to become "Not Set," breaking SSH access and certificate validation. While HPE regularly releases firmware updates to patch
HPE sometimes blocks downgrades to older versions. If you cannot downgrade, you may need to:
Back up your iLO settings or note your static IP configurations, just in case the downgrade triggers a factory reset. Method 1: Using the iLO 4 Web Interface (Easiest) Open your web browser and log into the iLO 4 Web Interface . Navigate to the left-hand menu and expand Administration . Click on iLO Firmware .