Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 20.4 and later, errors may occur when programming a .jam (JAM) file to a QSPI flash device attached to an Intel® Stratix® 10 FPGA at high JTAG clock frequencies.
To work around this problem in the Intel® Quartus® Prime Pro Edition Software v20.4 or later, reduce the JTAG clock frequency to 6 MHz.
You can modify the JTAG TCK frequency of an Intel FPGA Download Cable II with the following command:
> jtagconfig --setparam <cable_number> JtagClock 6M
This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 21.4.