BMC not working

Hello.

We have a Proliant DL 180 G6 server. After power crash a power supply was destroyed. We remove it but in BIOS on IPMI  2.0 configuration I see "Status Of BMC    -  Not working" "BMC Firmware Revision 27.??" I think that I must install new BMC firmware but how can I do it?

Thank for response and sorry for my English.