HOW TO RESET FREQUENCY
1.Open your cmd
2.Type Telnet 192.168.254.1.For windows 7 & Vista enable your telnet.search google.com if you don't know how.google is your friend.
3.Supply the username: Firefly and password: $P4mb1h1r4N4m4nT0!!
4.sncfg set WMX_FREQ_LIST 2507500,2602000,2612000,2638000,2622000,2505000,2510000 then hit enter.
5.sncfg commit then hit enter
6.reboot then hit enter.wait until the reboot it's done.
7.Now you already change it back to it's default value.