This article explains how to update the dell iDRAC firmware via the iDRAC web interface. This is particularly useful if you running a non-windows OS on the Dell server e.g. VMWare ESXi.
Download the firmware update file
You can download the firmware from here
You want to download the hard drive version
Extract Downloaded File
Extract the downloaded file. The key file is highlighted below
Upload Firmware Update to idrac
Logon to the idrac and go to “remote access” and “update.
Upload the firmware update file (in this example firmimg.d6)
Select next to install the update.
Wait until complete.
If you now close your browser and reconnect to the idrac you will see it looks very different!