Overclocking a modded Cisco E4200v2 (router)

[Mtsimmer]

  

A few things to note before starting.

This mod is just for fun and learning.

the performance benefit will probably be unnoticeable but I still find it cool having a modded overclocked router.

if you dont know how to help but still interested just wish good luck and stay updated ill try updating here and there.

 

whats the deal

I got an old router lying around which I didn't really had a porpoise so I decided to make it my main and mod it a bit so I will be able to OC down the road.

the mod is unnoticeable from the outside , its just radiator on-top of the CPU shielding and a fun to make the "passive" cooling more effective the whole

build is based on Openwrt which from what I understand should allow to tweak those kinda parameters.

 

but where is the problem

-I made some research while trying the problem it didn't get me far. I found out that the boot-loader on this thing is uboot and that it boots from a certain partition which
  which I dumped using dd, didn't really find a way to explore it . The idea behind is to find the parameters which affect the CPU speed change them and overwrite that partition 
  this idea is problematic because any integrity check on that partition will lead to a brick (idk if it even exists).
-I found a little software which allows you to mess with the partition's variables* (it maps something by setting an offset in the flash ...) also problematic to mess with.

  how can I make sure the offset is correct ? and even if it is there is no mistake there is no cpu_freq parameter (like some people said) or something with the same value as

  its supposed frequency 

-turns out someone was able to OC it using DDWRT... don't really wanna change to DDWRT... I kinda like Openwrt more 
Please correct me where I messed up after-all its also interesting just to know , Thank you.

*I may be talking nonsense.

A few links I used in the way:
https://openwrt.org/toh/hwdata/linksys/linksys_e4200_v2

https://openwrt.org/toh/linksys/ea4500

https://www.smallnetbuilder.com/wireless/wireless-reviews/31651-cisco-linksys-e4200v2-dual-band-n900-router-reviewed

https://www.stevejenkins.com/blog/2013/03/how-to-overclock-a-ciscolinksys-e4200-router-running-dd-wrt/ (there is no vnram command in opernwrt)*

https://forum.openwrt.org/t/overclocking-router-devices/1298 (the idea of dumping)