Access Restrictions killed my WRT54GL 1.1

Discussion in 'Tomato Firmware' started by Nox997, Dec 28, 2007.

  1. Nox997

    Nox997 LI Guru Member


    Yesterday, I tried to set up some Access Restrictions to block advertisement domains. I used this list:

    As the box with HTTP requests is limited to 2048 characters, I set um many Access-Restriction rules.

    After about the 15th rule, the WRT54GL locked up. (Power-LED was blinking, all LAN-LEDs were on but no LAN-Port was connected)
    I couldn't access it anyway.

    Pressing the Reset-Button for over a minute didn't help, I had to shortcut pin 15&16 of the Flash IC to be able to reflash the firmware.

    So is this a bug in the tomato firmware? And how can I set up my access-restrictions? Must I use iptables "directly"?

    Thanks for any help!
  2. u3gyxap

    u3gyxap Network Guru Member

  3. valerima

    valerima LI Guru Member

    shortcut pin 15&16 of the Flash IC

    could you clarify how you did this, please?
  4. Nox997

    Nox997 LI Guru Member

  5. valerima

    valerima LI Guru Member


    appreciate, this is useful.
  6. Slavedriver

    Slavedriver LI Guru Member

    The problem here, in fact, is that Tomato allowed 30Kb to be written (or actually tried to write) into NVRAM.
  7. szfong

    szfong Network Guru Member

    Shortting pin 15&16 of the Flash IC

    Shorting the pins is in effect trying to corrupt the flash as to accept a new firmware by the bootloader, well hopefully. It's also a good way of destroying the flash chip hehe :)

    Use a jtag cable instead. Play with the shorting of pins a couple of times or so and you'll have a REAL brick that even jtag won't revive.

  8. Nox997

    Nox997 LI Guru Member

    but which jtag cable should I buy?
  9. lwf-

    lwf- Network Guru Member

    This is defiantly a problem with tomato, it should not continue writing if it can brick the router. Send a mail to Jon will you so that none else will fall into this trap.
  10. Nox997

    Nox997 LI Guru Member

    Well I did this already - what he answered me was the following:

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