Quartus® Prime Pro Edition: Version 25.3 Software and Device Support Release Notes
ID
683706
Date
9/29/2025
Public
1.1. New Features and Enhancements
1.2. Changes to Software Behavior
1.3. Altera IP Regeneration
1.4. Operating System Support
1.5. Disk Space and Memory Recommendations
1.6. Quartus® Prime Licensing Information
1.7. Device Support and Pin-Out Status
1.8. Timing Model, Power Model, and Device Model Status
1.9. Altera® FPGA SDM Firmware
1.10. IBIS Models
1.11. EDA Interface Information
1.12. Antivirus Verification
1.13. Software Issues Resolved
1.14. Software Patches Included in this Release
1.15. Latest Known Quartus® Prime Software Issues
1.16. Latest Known Altera® FPGA SDM Firmware Issues
1.17. Quartus® Prime Pro Edition Software and Device Support Release Notes Archives
1.18. Quartus® Prime Pro Edition Software Release Version 25.3 Document Revision History
1.2. Changes to Software Behavior
This section documents instances in which the behavior and default settings of the Quartus® Prime Pro Edition software have been changed from earlier releases of the Quartus® Prime Pro Edition software.
Quartus® Prime Pro Edition software version 25.3 introduces new software behavior changes.
For a list of all the default assignment settings for the latest version of the Quartus® Prime software, refer to the Quartus® Prime Default Settings File (.qdf):
- Linux* operating systems: <Quartus Prime installation directory>/quartus/linux64/assignment_defaults.qdf
- Windows* operating systems: <Quartus Prime installation directory>/quartus/windows64/assignment_defaults.qdf