This documentation applies to the following versions of Splunk: 4.0 , 4.0.1 , 4.0.2 , 4.0.3 , 4.0.4 , 4.0.5 , 4.0.6
Before you install Splunk, be sure to review the system requirements and ensure that you've downloaded the right installation package for your system.
If you're upgrading from an earlier version of Splunk, review the information in "What to expect when upgrading to 4.0" before proceeding.