signaltap can't find the instance

Hi Sir,

Make sure the .sof file programmed to your device is the updated one with new .stp added to your project. You need to add .stp file before compile and build the new project (new.sof). Make sure the OS meet the Quartus requirement as sometime this might be causing the issue.

I also found similar to your issue. Can refer to link below for details

[1]. https://community.intel.com/t5/Intel-Quartus-Prime-Software/Error-Can-t-find-the-instance-Download-a-design-with-SRAM-Object/td-p/103467

[2]. https://community.intel.com/t5/FPGA-SoC-And-CPLD-Boards-And/Error-Can-t-find-the-instance-Download-a-design-with-SRAM-Object/td-p/44910

[3]. https://community.intel.com/t5/Intel-Quartus-Prime-Software/Problem-with-signaltap-implementation-on-a-stratix-10/m-p/665804#M61322

Regards,

Thanks