The firmware upgrade is performed by a script running on the management controller. The script accesses a web server hosting a directory that contains the firmware upgrade. The firmware is provided as a compressed .tar file. The file name contains the version number and is in the format of:
nm2 is either 36p or 72p, indicating whether the firmware is for the Sun Datacenter InfiniBand Switch 36 or Sun Datacenter InfiniBand Switch 72.
version is the version of the firmware.
For example, SUN_DCS_36p_1.1.3.tar.gz.
Within the .tar file are the upgrade script and necessary .rpm packages in a smaller .tar file.