Why does HPS Flash Programmer fail in writing QSPI flash devices when CSEL is set to zero? - Why does HPS Flash Programmer fail in writing QSPI flash devices when CSEL is set to zero? Description Due to a problem in the Quartus® II software, the HPS Flash Programmer may fail to program QSPI flash devices during verification when CSEL is set to zero. Resolution To work around this problem, use Intel® Quartus® Prime Software version 15.1 or later. Also see the following related Article: error--fail-to-read-silicon-id Custom Fields values: ['novalue'] Troubleshooting NA False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 15.1 15.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']