Thank you for using our software portal. Using the link given below and proceeding to the developer's website in order to download ERDAS Desktop 2011 was possible when we last checked. We cannot confirm if there is a free download of this software available.
However, we must warn you that downloading ERDAS Desktop 2011 from an external source releases FDM Lib from any responsibility. Please carefully check your downloads with antivirus software. Direct link to the product shall be included for your maximum convenience as soon as it becomes available.
Download from www.hexagongeospatial.com