When I try to write a .sof file to the FPGA, sometimes I get the following error message and am unable to write. Please tell me the measures.

Quartus Prime

<error message>
“Can't find the instance. Download a design with SRAM Object File containing this instance.”

This is because data could not be transferred correctly to the JTAG line (between PC and FPGA) due to possible noise contamination.

As a countermeasure,
・ Raise the revision of USB-Blaster
・ Change to another download cable (ByteBlaster II, etc.)

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