WRV54G is dead after firmware upgrade, power led is blinking

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by DimonDev, Feb 22, 2005.

  1. DimonDev

    DimonDev Network Guru Member

    After upgrading to version 2.37 (EU) my WRV54G won't boot. The power led is blinking continiusly.
    When I connect the LAN cable, the appropriate LED is lights up, computer shows that there is the connection.

    BUT, I simply cennot get any IP address. Reseting just doesn't work.

    Does this router has something like console, so I can fix a problem? Or are there any other way to fix it?
  2. linksysonline

    linksysonline Network Guru Member

    Probably a result of a bad firmware flash...
    Try this:

    Download TFTP:

    TFP Howto:
    Firmware upgrades may erase all previous settings to your router's configuration. Before upgrading your firmware, make sure to record your settings.

    1. Unplug and disconnect all computers from the router except for one. This computer must be plugged into the router directly. There can be no other network activity (wired and wireless) on the router during the upgrade, so be sure to power off all other computers.

    2. Go to http://www.linksys.com/download

    3. Select the model number of the Linksys router you have. Make sure to select the correct router version as well, as firmware upgrades frequently vary by version. You can find your router version underneath your router after the model number. For example, “BEFW11S4 ver. 2â€.

    4. Click the Downloads for this Product button.

    5. Once you arrive on the download page, click the Firmware button.

    6. After the firmware page opens, click the link that says “Click here to download the latest firmware...†and download the firmware file to your computer.

    7. Once you download the firmware Zip file, unzip it. If you do not have an unzipping program, go to http://www.winzip.com and download WinZip, which will allow you to unzip the file.

    8. After unzipping the firmware files, one of them will be called TFTP.EXE. Double click on it.

    9. When the “Upgrade Firmware†window opens, you will have three prompts. The “Server†field is for the IP address of your router; by default this would be

    10. Enter the routers password into the “Password†field; by default the password is admin.

    11. Browse for the file in the Firmware Upgrade utility program by clicking on the button next to file with the '…' symbol on it. Look for the file named 'code.bin' in the folder where the firmware files were extracted to.

    12. Highlight the code.bin file and click on the Open button to direct the TFTP loader program to put that file into the "File" box.

    13. The full path should be displayed [example: c:\linksys\code.bin].

    14. Click on the Upgrade button to begin the upgrade process.

    15. The upgrade should take about 1 minute, and you will be prompted after the upgrade is complete and successful.
  3. Toxic

    Toxic Administrator Staff Member


    you dont need to register for that:)

    it sounds like the firmware upgrade has gone wrong ot the firmware itself was corrupt.

    assuming you have windows XP these instructions can be generic.

    1. Go to Start click on Run and type in control ncpa.cpl

    2. Double click on the Local Area Connection that controls your network card.

    3. Click Properties under Local Area connection status.

    4. Click the Configure button. Then, click on the Advanced Tab.

    5. Click Connection Type (this may also appear as Media Type, Connection Speed, Mode, Link Speed, etc). The current default value should be set to "Auto sense" or "Auto".

    6. Change the value of this option to 10Base-t, half duplex mode (usually the lowest possible option). The wording of this value may also vary, depending upon the make and model of the Network Adapter. Other possibilities include 10T half, 10Mb half duplex, 10Mbps half, etc.

    7. Click OK after you made the change then click Close

    Reloading the firmware

    get a new version of the correct firmware you need first of all.

    1. First, hold the reset button located on the back of the router for 30 seconds.

    2. Next, to test communication between the Router and the network card: Go to Start, and select Run. Type in command and press [Enter]. This will bring up the MS-DOS prompt window.

    3. Type ping and press [Enter]

    4. You should get the following results:

    Pinging with 32 bytes of data:
    Reply from bytes=32 time<10ms TTL=128
    Reply from bytes=32 time<10ms TTL=128
    Reply from bytes=32 time<10ms TTL=128
    Reply from bytes=32 time<10ms TTL=128

    5. Once you get these replies, close out of the command prompt by typing in exit and pressing [Enter].

    6. You may now proceed to upgrade the router’s firmware with the files that were downloaded.

    7. Once the upgrade is complete, the router's Power light should no longer be blinking.
  4. gaogi

    gaogi Network Guru Member

    If you still can't upgrade after trying all the things outlined above, try plugging a ethernet cable into the WAN port and set your PC to Then upload the firmware to using TFTP. From the Windows 2000/XP command line:

    tftp -i put [firmware path]

    Wait about 5 minutes after the tftp transfer is complete before power cycling the unit, so the flash can be written properly
  5. DimonDev

    DimonDev Network Guru Member

    Thanx for answers. :)

    Unfortunately, it didn't help. I cannot see any incoming traffic from any ports (both LAN and WAN). I even used Ethereal capturing in promiscuous mode, I also scanned all IPs from up to, and I haven't got any response.

    The interesting thing is, that LAN or WAN leds are lighted, they are even flashing when I'm trying to ping the router... But that's all, no incoming packets are going back to my computer.

    That's why I'm asking about console window or something like that. If it's a regular linux inside, maybe I would be able to see what's going on...
  6. DocLarge

    DocLarge Super Moderator Staff Member Member


    here's something basic to try...

    1) unplug the unit
    2) press and hold the reset button
    3) plug the power back in
    4) hold the reset button for 12 seconds (or as long as necessary), then release.

    This has always been a failsafe for me when my wrt54g started acting crazy after flashing it with sveasoft firmware...
  7. clrpinto

    clrpinto Network Guru Member

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