Saturday, July 21, 2018

DD-WRT Firmware for TRENDnet TEW-812DRU Wireless Router

I'm lucky enough to get gigabit internet access at home, from Wave Broadband, with which I'm quite happy. And I don't even need a modem — with my apartment building, I can just jack directly into the Ethernet port in my living room wall. I originally got a Kasada router, but its firmware hasn't been updated in a couple years, so I decided to get a new router that I knew would be updateable with the Free Software DD-WRT firmware.

I got a TRENDnet TEW-812DRU v2, which although it's like 5 years old, is as fast as I need (supporting gigabit ethernet, plus 1.3 Gbps 802.11ac and 450 Mbps 802.11n wireless on separate 5 GHz and 2.4 GHz channels) — and a quarter of the price of comparable new routers. And, importantly, it looked like it was well supported by DD-WRT.

And it did turn out to be well supported by DD-WRT. Having first read through all the forum posts about the TEW-812DRU, I found that, unlike some other routers, you don't need anything special to use DD-WRT on the TEW-812DRU — just upload the new firmware to the router through its web UI and let it do its thing, no tricks needed.

So the first thing I did when I plugged in the router was login to its web UI and flash it with the "Open Source" firmware I downloaded from the TRENDnet TEW-812DRU downloads page. That turned out to be DD-WRT v24-sp2 r23194, compiled on 12/21/2013. I was happy it worked, but that firmware was just way too old.

So next I looked up the TEW-812DRU in the DD-WRT router database, and that prompted me to download something labeled DD-WRT v24-sp2 r23804 (but turned out actually to be r23808), compiled on 3/27/2014. I flashed that firmware through the web UI — but when the router rebooted, it presented me with an "Emergency Web Server" page. I went to look up what that meant via a working internet connection, and when I checked on the router again, the Emergency Web Server page had been replaced with the working DD-WRT web UI. I figure it must have just taken a little extra while for the router to boot everything up, no big deal.

But that firmware was also way older than I was hoping for, so I went searching through the downloads directory of the DD-WRT site — and finally found the latest version of the TEW-812DRU firmware here:

I flashed that firmware through the router's web UI, and was very pleased to see the router reboot with no issues at all, happily running DD-WRT v3.0-r36330 mini — compiled just a few days ago on 7/16/2018. Finally, peace of mind that no bears, pandas, or kittens will be making themselves at home inside my router!


  1. HI is`s usb working on those firmware?

  2. I just downloaded it and it appears that it is not working for me. The services/USB tab doesn't even show up,neither does the NAS tab. If anybody has the latest stable build I'd lovr to know what it is

    1. Did you end up finding a build that has USB support?

  3. CAn we get openwrt firmware for Trendnet WIFIRepeater

  4. Go to your web browser and type in "" so as to access it. From there, enter your proper username and password in the designated boxes and press enter. 192.168.l.l