Asus RT-N12
From DD-WRT Wiki
This install needs to be updated, I just wanted to get the page started.
Special Thanks to Eko
Asus RT-N12 is now supported. Actually it is quite good router for its price.
If you don't need USB and Giga ethernet and 5GHz, it is good alternative to e.g. Linksys wrt160nv3 etc...
It has bcm4716b0 cpu, 4 MB flash and 32 MB ram + 2 external removable antennas.
Please don't flash any old builds.
Ok, here it is... something to start with.
Unzip file.... then simple GUI update will do.
Reference Thread
INSTALLATION INSTRUCTIONS
0. Download the firmware above and extract to your desktop.
1. You will need to manually set the address of your PC's Network LAN card to 192.168.1.10 and subnet mask 255.255.255.0. Also make sure all other adapters on your PC, except for the main LAN connection are disabled.
2. Remove the power connector of the WL series router.
3. While holding the BLACK reset button down, plug the power connector back in.
4. When the power LED flashes, release the reset button. The router is now in recovery mode.
5. Use the Asus recovery utility to upload the DD-WRT mini-asus.trx file.
6. After the upgrade, the Utility will ask for a router reboot. Give it about a minute to be on the safe side before removing the power. Unplug the power from the router.Plug the power back in, you will then be able to access the web interface.
7. Return your Net adapter properties to "Automatically Obtain IP"
8. DO NOT use Firefox for upgrading builds! Use Internet Explorer!!!!
9. Type 192.168.1.1 into your browser and set your username as root and pick a password.