Why is there an "unrecognized device" error when using quartus_jli to configure or program a JAM file for flash devices of 2 GB or larger? - Why is there an "unrecognized device" error when using quartus_jli to configure or program a JAM file for flash devices of 2 GB or larger?
Description In any versions of Altera® Quartus® Prime Pro Edition Software, the quartus_jli command may report an “unrecognized device” error when a JAM file targets a flash device that is 2 GB or larger. This behavior is specific to JAM files used with large flash devices and does not occur with smaller flash sizes. Resolution Use the following workaround to avoid the error: Run the jtagconfig command to detect the connected JTAG hardware. After the hardware is detected, run quartus_jli to configure or program the JAM file. There is currently no plan to fix this behavior in a future Quartus® Prime release.
Custom Fields values:
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Troubleshooting
QS-66124
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['FPGA Dev Tools Quartus® Prime Software Pro']
No plan to fix
25.1
['Agilex™ 3 FPGAs and SoCs', 'Agilex™ 5 FPGAs and SoCs', 'Agilex™ 7 FPGAs and SoCs', 'Agilex™ 9 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 GX FPGA', 'Stratix® 10 FPGAs and SoCs']
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['novalue'] - 2026-05-21
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