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Tag: firmware

Updating the Firmware on Quanta LB4M Switches

There seems to be a lack of information (that isn’t misinformation) on how to upgrade the firmware on Quanta LB4M switches. Posts abound containing warnings about bricking your switch. Likely, these people attempted some XMODEM transfer that was not needed. All you need is a TFTP server, which can even be running on your local computer.

Grab a copy of the firmware from Jared’s site (or my mirror: / I used lb4m. as it’s the latest and seems to be the most featureful, although I’m still trying to locate a copy of the release notes for each version.

Make that file available via your TFTP server and ensure that your switch can see your TFTP server (ping should do nicely). I’ll assume that your TFTP server is on, so if it isn’t replace that with the IP you’re using. Once your switch can see the TFTP server, it’s time to begin.

The LB4M has two firmware slots: image1 and image2. You’ll need to determine which is currently active, as you cannot download firmware to the active slot.

(Switching) #show bootvar

Image Descriptions

image1 : default image
image2 :

Images currently available on Flash

unit      image1     image2      current-active         next-active

  1              image1              image1

This shows that we need to download the firmware into image2, as image1 is the currently loaded firmware. We do that with the following command:

(Switching) #copy tftp:// image2

Select ‘y’ at the prompt of “Are you sure you want to start?” and the transfer will begin. It will take a few minutes, but should complete without issue, assuming your TFTP server is reachable and working properly. If all goes well, you’ll see the following:

Verifying CRC of file in Flash File System

File transfer operation completed successfully.

All that’s left is activating the image and rebooting.

(Switching) #boot system image2
Activating image image2...

(Switching) #reload

Gargoyle Router Firmware on Netgear WNDR3700v2

A few days ago, I mentioned that I was having major issues with DD-WRT running on my Netgear WNDR3700v2. My wireless was constantly dropping out and even my wired connections would lose the ability to see the router. On the day I gave up, I had to reset the router five times. Not okay.

So, I looked at Gargoyle Router. Gargoyle is basically a front-end for OpenWrt, an open-source router firmware. It’s stable and works well with a number of flashable routers.

So far, I’m enjoying the stability and minor wireless speed increase, by being able to open up the wireless channel size, which unlocks the full potential of 802.11n. Gargoyle Wireless Settings

For those users in North America, you’ll need to download a firmware image that ends in “-NA”. Currently, only version 1.5.0 in the Experimental branch and version 1.4.3 in the stable branch support North America for the WNDR3700v2. These files can be uploaded to the factory firmware’s Upgrade page and, after waiting about 5 minutes, will completely install without any other user interaction.

The default IP address will be and the web login password will be ‘password’.