Why is the Engineering Change Orders (ECOs) editing mode greyed out in Chip Planner? - Why is the Engineering Change Orders (ECOs) editing mode greyed out in Chip Planner? Description In the Quartus® Prime software version 16.1 Update 2 and earlier, you may see the ECOs editing mode greyed out in Chip Planner. This occurs because ECOs are unsupported for Intel® Arria® 10 and Intel® Stratix® 10 devices. Resolution This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 19.3. Custom Fields values: ['novalue'] Troubleshooting FB: 152341; False ['novalue'] ['novalue'] novalue novalue ['Arria® 10 FPGAs and SoCs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']