Cyclone V GT FPGA Development Kit Flash

I bought a Cyclone V GT FPGA Development Kit for digital control, which only needed to use HSMC interface and ETH to communicate with the computer, but I encountered many difficult problems in the development project.

1. The sof file generated by Quartus compilation can be downloaded to FPGA, and can run normally. However, I tried to download jic file to EPCQ256 Flash, but failed. I downloaded the MAX V pof file that allows the configuration of EPCQ256 by referring to the advice given by Intel official website. However, it is still not possible to cure jic project files with quartus programmer. I would like to ask you what effective method is available to cure project files into Flash to realize automatic project loading after power-on.

2. When I tried to program Flash, I mistakenly used Quartus to erase 1Gb CFI flash on the development board. I followed the operation on the official Intel website to restore the factory Settings of Flash. However, after the restore.sh file is selected on the NIOS command line window, Empty flash content cannot be programmed or verified is displayed, and the factory Settings cannot be restored. I see that the official documentation mentions that Flash has important information about boards, and I'm not sure if this will have much impact. My experiment needs only FPGA and HSMC interface for control, and Ethernet communication with PC. I am not sure if the erasure of information in Flash will affect the Ethernet communication, if it affects the function, can I send the board back for repair?