[Skunkworks] Cisco WRT120N

Skunks, I have the above wireless device. It broadcasts for like two minutes and it stops. Has anybody had the same issue. I have researched and the advice I am getting is to try different Firmware versions. Secondly, I understand that When I buy a Cisco device, the hardware is mine but the Firmware belongs to Cisco. Does that have any effect on changing the firmware or updating. gate keeper