You can use iDRAC GUI to update iDRAC firmware. To update iDRAC firmware using GUI you need to download  file "iDRAC6_2.92_A00_FW_IMG.exe" (This is a self extraction file) from dell support site (Link below) and extract to a folder. You can upload extracted "firmimg.d6" file to update iDRAC FW using GUI [URL] [IMAGE]
R610 running Windows Server 2012 R2firmware updated to V6.6I'm able to login to the iDARC using its web address and it shows as Enterprise.Tried to update iDRAC Enterprise using ESM_Firmware_KPCCC_WN32_2.92_A00.EXE (Dell iDRAC Monolithic Release 2.92, A00iDRAC6 Firmware Upgrade problem - "Device iDRAC6, Application, iDRAC6, failed to access Virtual USB device".Investigating shows USB mass storage not able to start with "Insufficient system resources exist to complete the API". Below is the racadm getsysinfo output. How do I get the iDRAC to current revision? racadm getsysinfo RAC Information:RAC Date/Time = Sun Feb 02 22:26:30 2020Firmware Version = 1.70Firmware Build = 21Last Firmware Update = 04/07/2011 20:28:43Hardware Version = 0.01MAC Address = 14:fe:b5:d2:94:7a Common settings:Register DNS RAC Name = 0DNS RAC Name = idrac-C2G5FP1Current DNS Domain =Domain Name from DHCP = 0 IPv4 settings:Enabled = 1Current IP Address = 192.168.1.230Current IP Gateway = 192.168.1.1Current IP Netmask = 255.255.255.0DHCP Enabled = 0Current DNS Server 1 = 0.0.0.0Current DNS Server 2 = 0.0.0.0DNS Servers from DHCP = 0 IPv6 settings:Enabled = 0Current IP Address 1 = ::Current IP Gateway = ::Autoconfig = 1Link Local IP Address = ::Current IP Address 2 = ::Current IP Address 3 = ::Current IP Address 4 = ::Current IP Address 5 = ::Current IP Address 6 = ::Current IP Address 7 = ::Current IP Address 8 = ::Current IP Address 9 = ::Current IP Address 10 = ::Current IP Address 11 = ::Current IP Address 12 = ::Current IP Address 13 = ::Current IP Address 14 = ::Current IP Address 15 = ::DNS Servers from DHCPv6 = 0Current DNS Server 1 = ::Current DNS Server 2 = :: System Information:System Model = PowerEdge R610System Revision = IISystem BIOS Version = 6.6.0Service Tag =  Express Svc Code =  Host Name = grollman-s0OS Name = Microsoft Windows Server 2012 R2, Standard x64 EditionPower Status = ON Watchdog Information:Recovery Action = NonePresent countdown value = 474 secondsInitial countdown value = 480 seconds Embedded NIC MAC Addresses:NIC1 Ethernet = 14:FE:B5:D2:94:72iSCSI = 14:FE:B5:D2:94:73NIC2 Ethernet = 14:FE:B5:D2:94:74iSCSI = 14:FE:B5:D2:94:75NIC3 Ethernet = 14:FE:B5:D2:94:76iSCSI = 14:FE:B5:D2:94:77NIC4 Ethernet = 14:FE:B5:D2:94:78iSCSI = 14:FE:B5:D2:94:79  
R610 firmware up to 6.6.0, can't get iDRAC to update, two related errors