Recently I've got a Cisco Linksys router model EA6900, it was a gift from somebody who didn't know if it worked. When I first set it up, the Linksys LED logotype turned on but nothing happened, so I proceeded with a "30-30-30" reset, and after that the logo LED stays flashing at a constant rate. I can ping the router and get a response of under 1 millisecond, so I tried to upload the firmware via TFTP and no luck. All the manuals and tutorials that I've seen use a *.bin file, but the firmware file at official Linksys website is a .img, so I still wonder if that is the cause of the TFTP not working. The router apparently responds to every reset with a flash of the ethernet ports LED's, but can't get it to recovery mode or something else.
Also, it has a white 5 or 6 pins (I don't remember exactly) that maybe can be used with the Jtag method, but haven't found any specific information on the Net.
Can this router be de-bricked or should I use the parts for another useful thing?