Why does Active Serial (AS) configuration fail in Intel Agilex® 7 and Intel® Stratix® 10 devices when the configuration flash device is set to 4-byte addressing mode? - Why does Active Serial (AS) configuration fail in Intel Agilex® 7 and Intel® Stratix® 10 devices when the configuration flash device is set to 4-byte addressing mode? Description In Intel Agilex® 7 and Intel® Stratix® 10 devices, you might observe Active Serial (AS) configuration failure when the configuration flash device is set to 4-byte addressing mode. This is because Intel Agilex and Intel Stratix 10 devices expect the configuration flash device to operate in 3-byte addressing mode. Resolution A patch is available to work around this problem for the Intel® Quartus® Prime Pro Edition Software version 20.1, this will set your configuration flash device to operate in 3-byte addressing mode when you reprogram your configuration flash device using the JIC programming flow. Download and install patch 0.11 from the following links: Patch 0.11 for Windows (.exe) Patch 0.11 for Linux (.run) Readme for patch 0.11 (.txt) This problem is fixed in the Intel® Quartus® Prime Pro Edition Software version 20.2. Custom Fields values: ['novalue'] Troubleshooting 1507967615 False ['Generic Component'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.2 20.1 ['Agilex™ 7 FPGAs and SoCs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']