Information about downloading IBM Cognos Business Intelligence 10.1.1 FP3 is available on the Downloading IBM Cognos Business Intelligence 10.1.1 FP3 page.
Cognos Business Intelligence 10.1.1 Fix Pack 3 provides important product corrections and should be applied to all installations. This fix pack also provides support for Firefox ESR 24 in the Cognos Report Studio and Cognos Business Insight Advanced user interfaces. Other IBM Cognos Business Intelligence user interface components do not require updates for compatibility with Firefox ESR 24.
The fix list for this fix pack can be found here.