Why does the niosv-download utility unable to download the Nios® V processor application ELF file when there are multiple cable instances? - Why does the niosv-download utility unable to download the Nios® V processor application ELF file when there are multiple cable instances? Description The following error message is displayed in the Intel® Quartus® Prime Pro Edition Software version 21.3 and 21.4 when you perform the following tasks: Downloading a Nios® V processor application ELF file into Intel® FPGAs using the niosv-download utility. Generating an OpenOCD configuration file using openocd-cfg-gen utility. INFO: Generating OpenOCD config file. Running "openocd-cfg-gen -c 2 /tmp/niosvm.cfg". Please specify a valid cable ERROR: Failed to generate OpenOCD config file. This error message occurs due to a bug in the openocd-cfg-gen utility, whereby the utility cannot generate the OpenOCD configuration file unless the targeted Intel FPGA is connected to the 1st cable instance. A similar error can be seen when you are using the niosv-download utility because the niosv-download utility also calls out or uses the openocd-cfg-gen utility. You may run the jtagconfig command to display all the connected instances to the host computer. Resolution To work around this problem in the Intel® Quartus® Prime Pro Edition Software version 21.3 and 21.4, follow these steps: Ensure that the targeted Intel FPGA is connected to the 1st cable instance. Disconnect other Intel FPGAs from your host computer through the following methods: Power down the devices Unplug the devices from the host computer Download and install the following patch to fix this error in the Intel® Quartus® Prime Pro Edition Software version 21.3: Intel Quartus Prime Pro Software v21.3 Solution Patch 0.33 for Windows (.exe) Intel Quartus Prime Pro Software v21.3 Solution Patch 0.33 for Linux (.run) Readme for Intel Quartus Prime Pro Software v21.3 Solution Patch 0.33 (.txt) Download and install the following patch to fix this error in the Intel® Quartus® Prime Pro Edition Software version 21.4: Intel Quartus Prime Pro Software v21.4 Solution Patch 0.17 for Windows (.exe) Intel Quartus Prime Pro Software v21.4 Solution Patch 0.17 for Linux (.run) Readme for Intel Quartus Prime Pro Software v21.4 Solution Patch 0.17 (.txt) This problem is fixed starting from Intel® Quartus® Prime Pro Edition Software version 22.1. Custom Fields values: ['novalue'] Troubleshooting 18019513469 False ['Nios® V/m Processor'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.1 21.3 ['Agilex™ 7 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 GX FPGA', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']