AFT Fathom Installation Instructions

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This page is for current AFT Arrow users who are upgrading their software to the latest version. With every new version, AFT seeks to make engineers more productive while designing safe, efficient, and reliable systems. Our development philosophy balances User Workflow, Enhanced Capabilities, and Backend Improvements.
Current Version

Upgrade your AFT Fathom License:

  1. Register or log-in to this website. 
  2. Download the current version of AFT Fathom at
  3. Install FthFullz.exe as an administrator.
    • The latest version of AFT Fathom will be installed alongside previous versions - you will still have access to earlier versions.
  4. When prompted, enter your license number (XXXX-XXXXXalong with your name and organization.
    • If you have a license of Fathom XTS, SSL, GSC, or ANS no additional steps are required – it is automatically installed with Fathom.
    • Complete the installation.
  5. Launch AFT Fathom!
    • If you have active copy protection (an eLicense or USB Key), AFT Fathom will start right away.
      • Copy protection for active SUM subscribers has been automatically upgraded.
    • If AFT Fathom did not start, you may need to follow the appropriate instructions:
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