1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

OOOOPS, Just bricked a WRT54Gv2

Discussion in 'Tomato Firmware' started by PGalati, Mar 12, 2013.

  1. PGalati

    PGalati Network Guru Member

    In the process of configuring a Shibby test install of 108, I wanted to increase the clock speed. this is done via the tools area since shibby does not provide a overclock GUI. I had my stuff written down but for whatever reason I had written:

    nvram set clkfreq=225
    nvram commit
    reboot

    Apparently this version was no too keen on 225. Previously running Toastman, selecting 250 would result in a 252MHz clock speed while maintaining stable. After entering the above commands, the router rebooted to a never ending blinking power button. The router does not recognize the reset button anymore, so a 30 30 30 does not help.

    I opened the router to reveal that the JTAG connector is soldered in, no holes. I soldered a header connector to the board and fired up EJTAG 3.0. When I perform a jtag -probeonly command, I get some good responses but the program stops at "Probing Flash at (Flash Window: 0x1fc00000) and stops.

    http://www.dd-wrt.com/wiki/index.php/JTAG

    This link leads me to believe that all I really need to do is erase the nvram and let the router rebuild one, but I can't seem to get that far. the firmware is/was good but the nvram is probably corrupted/

    Any suggestions?
     
  2. GhaladReam

    GhaladReam Network Guru Member

    You did it wrong, unfortunately. When overclocking, there are 3 values you need to enter, not just CPU speed. See the link below (I know it's a DD-WRT page, but the same works on Tomato)

    http://www.dd-wrt.ca/wiki/index.php/Overclocking_BCM_47xx_CPU's

    Also, you're going to get very little performance improvement from overclocking an older router like that one. You'll likely end up getting crashes unless you add additional cooling. I would recommend getting a new router (Asus RT-N66U) if you need more horsepower.
     

Share This Page