: If the "Downgrade Policy" is set to "Permanently disallow downgrades" in the iLO settings, you cannot revert to an older version through standard interfaces.
: Newer firmware often triggers a 100% fan speed "fail-safe" when it detects non-HPE components. Downgrading can sometimes bypass these restrictive thermal checks. downgrade ilo 4 firmware better
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. : If the "Downgrade Policy" is set to