1. Download Tomato and extract it. Copy and paste the tomato.trx file on the root of your C: drive.
2. Perform a hard reset by unplugging the power adapter from the router, then press and hold the reset button and plug in the power adapter. Continue to hold the reset button for one minute.
3. Insert a network cable from your computer’s Ethernet port  to LAN port #1 on the router. This will not work wirelessly.
4. On your computer go to the Start menu and select on Control Panel, then Network Connections, then right click on your Ethernet card and click on Properties. On the Local Area Connection Properties window click on Internet Protocol (TCP/IP) then click on Properties and change your settings as follows:
   IP Address: 192.168.11.2
   Subnet Mask: 255.255.255.0
   Gateway: 192.168.11.1
   Click OK.
5. Unplug the power adapter to your router.
6. Open up the command prompt by clicking on your Start menu and select Run then type in CMD and press the Enter key (if you don’t see Run, press your Windows key +  R key).
7. Type in C: and press the Enter key then type in CD\and press the Enter key. You should now see “C:\>“.
8. Type in “tftp -i 192.168.11.1 put tomato.trx” (Do Not press the Enter key as yet).
9. Plug in the power adapter to your router.
10. Quickly press the Enter key when you see that your computer has established a connection to the router.
11. If You receive a timeout error unplug and plug in the power adapter and repeat steps 8 through 10. If you received successful message wait for at least 2 minutes for the router to be successfully flashed.
12. Preform another hard reset (see step #2).
13. The router’s default address is 192.168.1.1. Change your network settings back to “Obtain Automatically” in the Internet Protocol (TCP/IP) properties window. You may access the router by typing in the IP address via web browser.
    Username: root
    Password: admin

Enjoy!