I configured eWC on my C9120AXI but encountered a problem where the Access Point sometimes joins and sometimes doesn't.   Jan 17 14:42:15.989: %SYS-5-CONFIG_P: Configured programmatically by process SEP_webui_wsma_http from console as admin on vty0 J...

  My power supply is showing amber. Please help me find a solution.  

I have a UCS-C240-M7 device, Please guide me to upgrade Unified Computing System (UCS) Server Firmware ucs-c240m7-huu-4.3.6.250053.iso