Why do the FIR II Megacore’s parameters revert to default values after upgrading to a newer version of the Quartus software? - Why do the FIR II Megacore’s parameters revert to default values after upgrading to a newer version of the Quartus software? Description Due to a problem in the Quartus® Prime software version 15.1 and earlier, the user-assigned parameter values of the FIR II Megacore will not be retained during an upgrade. They will instead be changed back to default values after upgrading to a newer Quartus Prime version. Resolution To work around this problem, open the top-level MegaWizard file in a text editor before opening/upgrading in the newer version of Quartus. Search for the following line and change it to the Quartus version (e.g. version="15.1") that you are currently using. For example, if you are using Quartus Prime 15.1, you would change this line: // Retrieval info: <instance entity-name="altera_fir_compiler_ii" version="15.0" > to: // Retrieval info: <instance entity-name="altera_fir_compiler_ii" version="15. 1 " > This problem is fixed beginning with the Quartus Prime software version 16.0. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']