DHCP not working

Dear friend's

I am facing few problems related to NIOS-II, i have cyclone ic20 board and trying to access Ethernet port through a linux based client.

problem's

1. i have enabled the DHCP both in software ("lwIP_DHCP = 1"),tand through NIOS-IDE tool setting (software setting\global variable\DHCP enable) also but still my simple socket server example wont able to get IP address through DHCP it always take IP through static IP address.

2. I am trying to write to flash , it says error on location 0xa

3.I am trying to restore my NIOS-II factory setting but it says UNKNOWN ERROR

please see the attached print screen of problem's .

kaushal