To "downgrade iLO 4 firmware better," you generally need to use the iLO web interface or the HPE Service Pack for ProLiant (SPP) in interactive mode to force the installation of an older version.
set /system1 oemhp_reset_to_factory=yes via SSH) and reload your saved configuration.The most common reason for a downgrade is the aggressive fan algorithm introduced in later versions (specifically around v2.73 and later). HP updated the firmware to be hyper-sensitive to "non-HP" hardware. If you install a third-party PCIe card—like a standard 10Gb NIC or an SSD—the newer firmware often can't read the temperature sensor on that card. downgrade ilo 4 firmware better
Under the Update Service section, ensure the Downgrade Policy is set to "Allow downgrades". To "downgrade iLO 4 firmware better," you generally