This procedure shows how to obtain firmware updates from the support.oracle.com.
See the web page Firmware Downloads and Release History for Oracle Systems (http://www.oracle.com/technetwork/systems/patches/firmware/release-history-jsp-138416.html) for links to firmware downloads for each server type.
The download is an archive file such as a zip file which you must extract to find the Sun_System_Firmware directory containing the firmware pkg file.
For example, unzip it on a local or network share or on a TFTP, FTP, HTTP or HTTPS server.
See the instructions in Update the System Firmware from Oracle ILOM or Update the System Firmware From the Host.