You can use Oracle Hardware Installation Assistant to easily download and then use the latest software release. For further information and download instructions, refer to the Oracle Hardware Installation Assistant 2.5 User's Guide for x86 Servers at http://docs.oracle.com/cd/E19593-01/index.html.
You can also obtain updated firmware and software from the My Oracle Support web site at https://support.oracle.com. For instructions, see Download Firmware and Software Updates From My Oracle Support.