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: iLO 4 versions earlier than v2.54 are vulnerable to critical security risks like CVE-2017-12542 , which allows for authentication bypass and remote code execution.
Several iLO 4 firmware versions released after 2.70 introduced a notorious bug that causes the iLO’s embedded processor to run at 100% constantly. This leads to a cascade of problems: the web interface becomes painfully slow, remote console (HTML5/iLO Integrated Remote Console) lags or disconnects, and SNMP traps fire incorrectly. Downgrading to a stable version like 2.70 or 2.73 instantly resolves this, restoring iLO to its snappy, responsive self.
Not all older versions are equal. The consensus in the HPE community points to or 2.73 as the "gold standard." These versions offer:
Let’s be clear: normally, firmware updates are good. They patch security holes and add features. But iLO 4 has a unique history. HP (now HPE) released iLO 4 in 2012. By 2020, development slowed, but critical changes appeared in versions and above—including controversial HTTPS cipher changes that broke compatibility with older browsers and remote management tools. downgrade ilo 4 firmware better
Under > Advanced options , select Downgrade Firmware or Downgrade & Rewrite Firmware to force the older version onto the system. UEFI/BIOS Method : At the POST screen, press F9 for System Utilities. Go to Embedded Applications > Firmware Update .
For enterprise environments, use a USB key. Boot from the SPP and navigate to Maintenance → Firmware Update → Force Options to allow version downgrade. This method is safer but requires an active support contract.
Once you’ve successfully downgraded to a stable version, you must block automatic updates. : iLO 4 versions earlier than v2
3. Restoring Legacy Browser Compatibility and Remote Console Access
After the downgrade completes (iLO will reboot; ~5 minutes):
Users typically seek this "feature" to resolve performance or hardware compatibility issues, such as: Downgrading to a stable version like 2
Click "Choose File," select the .bin file, and click "Install."
SSH into iLO as administrator:
If the web interface is frozen or completely unresponsive, you can flash the firmware using an external network server (HTTP or FTP) via SSH.
– Some users report that after upgrading past 2.60, their iLO Advanced licenses were no longer recognized or reset to Standard.