Hold those horses guys. replacing a motherboard should be the last fix.
Hi all,
We had same problem here in my company with a couple of G8 servers. ILO Version were 2.55 (Aug 16 2017).
"Controller firmware revision 2.10.00 Embedded media manager failed initialization".
The only way we could fix it was downgrading the ILO firmware to 2.54 (Jun 15 2017) for that, addi the .rpm file to a bootable USB with SPP2018030.2018_0226.84 inside. you need to locate the folder were the packages are located and just drop the file with ILO 2.54 in.
Boot from the USB and select interactive updates. Then advanced options and select upgrade/downgrade in order to have the 2.54 listed.
After downgrading, boot a couple of times and the issue will dissapear. Then you will able to update again to ILO 2.55 if you wouold like to.
Cheers