The primary reason users seek older firmware versions is the effect. HPE's thermal algorithms in newer iLO 4 versions (specifically post-2.50) can be overly aggressive, especially if non-genuine HPE parts—like retail SSDs or GPUs—are installed.
Below is a detailed guide on why you might consider a downgrade, the risks involved, and how to perform the process safely. Why Downgrade iLO 4 Firmware? downgrade ilo 4 firmware better
: If the "Downgrade Policy" is set to "Permanently disallow downgrades" in the iLO settings, you cannot revert to an older version through standard interfaces. The primary reason users seek older firmware versions
: 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. Why Downgrade iLO 4 Firmware
Downgrading iLO 4 Firmware: Why "Older" is Sometimes Better for Your Homelab
: Frequent flashing or using unstable versions can lead to "degraded" health status for the embedded Flash/SD-card, which is a common hardware failure in older Gen8 servers. How to Downgrade iLO 4 Firmware Safely
and Gen9 server owners find themselves searching for ways to to achieve better results. This unconventional move is often driven by a specific need for improved fan control, noise reduction, or compatibility with unofficial hardware.