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Is it possible to switch to the latest version of Tomato on a router that's already running DD-WRT? Using the default Linksys firmware on my WRT54GL v1.1, I had to upload a micro version of DD-WRT first. I imagine that, since I'm now running third-party firmware, I won't have to do that again to make the switch, but I thought I should check so as not to brick it.

This router is taking a back seat to a new AirPort Extreme (for the 'n' capability), but I still want to have the soon-to-be-Tomato device sit between the AirPort Extreme and my modem for the superior traffic graphing.

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Of course it's possible. If DD-WRT's firmware uploader balks at you for some reason, the (Windows only) TFTP method should handle it.

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TFTP Uploading a Firmware works just as well on Mac OS X and Linux. There are plenty of how-tos to google. From my experience it was always easy to just reflash a WRT54GL from DD-WRT to Tomato-WRT. Since both store their settings in NVRAM routers usually even keep their settings. Be sure to flash over an ethernet cable and not over WiFi if easily possible, makes flashing more reliable. –  MacLemon Mar 22 '10 at 8:16
Perfect, thanks! Just wanted to double-check before I had a paperweight with antennae on my hands. –  Collin Allen Mar 23 '10 at 1:30
There are several choices for TFTP servers in Linux - I went with one that seemed pretty easy enough. The fiddly part is the same on Windows and Linux - setting everything to have the particular IP address required, and making sure the filename and directory name are exactly correct to the letter. –  thomasrutter Mar 13 '11 at 9:09

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