Bricked your Fonera? That is quite common if you don’t follow rules properly. But then having a RS232-to-TTL convertor is pretty handy as you can access RedBoot using it (provided RedBoot is not messed up)
The router that is going under the knife
Flip the router over and remove the 2 rubber feets at the front of the router to expose the screws underneath
The board inside
The memory chip
Connections to the jumpers onboard
Where the Vcc, Ground, Tx and Rx should go
Tadaa! La Fonera with RS232 ready for communications with 9600-8-N-1 (no flow control) settings. Router recovery services anyone?