January 27, 2014

Overclocking Belkin F7D3302 / Broadcom BCM4716 Chip rev 1 - Tutorial

Hey Guys, just to follow up previous tutorial. I assume you have DD-WRT installed and we will start with opening the router's housing. See pictures below for details. (accept my apologies for some blurry pics).

1) Your router should be looking like this on the both side.




2)Turn it upside down and remove two screws from bottom, One is visible and the other one is under the sticker.
bottom-router

3) I would start to pry open near power port first as there is no tab on this corner.
routertab

4) Gently lift up the cover and pry where my screw driver pointing (you might need little force to push tab).
uppertab

5) There is a tab on the corner which you'll need to push prior to moving toward front of the router.
toptab

6)You want to work top to bottom, if you do bottom up, you might end up breaking tab.
fronttab

frontlower tab



7) Now you have the router opened, You might want to add Passive heatsinks like i have added. This will allow the CPU temp to fall, hence allow overclocking and stable Wi-Fi connection and You can increase TX power and beacon intervals.

opened-router

8) While you have case open, i'd drill wholes with smallest drill bit so we can have heat escape route. Belkin did extremely poor designing of placing vent on the bottom which is blocked by the stand plate.
 router-vent
9) Assemble it all together and now its time to fire this baby up and overclock the CPU.

10) enable telnet by logging in to your router by visiting http://192.168.1.1

11) login using putty/terminal for mac/windows respectively. Your username should be "root" and password will be "your password".

12) now you want to issue a command
nvram show | clkfreq
This above command will display your current frequencies and you might want to save them for later or write them down.

13) issue commands below
nvram set clkfreq=500,250,125 <= 1st number divided by 2 for remainder freqs.
nvram commit <= saves the above freqs
reboot
14) Log in to http://192.168.1.1 and check your CPU at sys info page, and it should say 500Mhz.



15) I will either add new tutorial for Wi-Fi optimization or update this thread.

Enjoy the speedy router!
 


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