flash programmer design problem in UP3 board

hi all,

1) i am using a UP3 EP1C6Q240C8 cyclone board with ES29LV160DB-70RTC excel semicon flash chip. i am doing a project where i have to do file read and write operations. for that i intend to use the flash and include my *.txt files to be read/written in my NIOS IDE 5.0 project.( i am using Q2 v5.0). i have generated the flash programmer FPGA design(.bdf) for my board and also the custom board "target files" using SDK shell as said in the "ug_nios2_flash_programmer.pdf". my board runs at 48 MHz and IDE says not to run flash below 50MHz. so i generated "target files" for my board using SDK shell at 50 MHz.

will there be any problem due to this?

2) when i run the IDE->tools->flash programmer utility, the window says target board not chosen. how to select the custom board i have generated in the flash programmer?

the "program flash" button is also disabled.

do i have to download the .sof file i have generated using shell into the fpga to solve this?

3) after programming the flash, can i write into it?

thanks

venugopal