La Fonera thru Serial

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?

4 thoughts on “La Fonera thru Serial

  • February 18, 2007 at 2:24 pm

    pretty nice information you got there. where can i get the serial device?

  • February 18, 2007 at 10:06 pm

    Hi, if you do know soldering perhaps you can check out “MAX233 Level Shifter Circuit” and build it. Otherwise you can get kits that interfaces PC and microcontrollers. They should be readily available at electronic outlets. You can try Sim Lim Tower (in Singapore). Try getting those that communicates from 3.3 to 5.0 volt range.

  • February 22, 2007 at 10:47 am

    I’ve gotten a rs232-2-ttl converter off Just search for “MAX232 RS232 to TTL Converter Board” and there should be some results. Hope it help others

  • February 23, 2007 at 7:31 pm

    Fonera Recovery

    Met up with Richneo (hardwarezone) and Liangtam (hardwarezone) earlier on at Westmall to recover Liangtam’s bricked FON. Liangtam’s set was bricked because of the RedBoot’s configuration were corrupted (probably due to bad RedBoot configuration writing…

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