Question [Q] Ho to get "USB Internet" option on android 4.1.x?

Hi people, i had searched a lot on internet and not found any solution yet.

I have Cynus t2 v17 ROM on my Micromax a110. Its android 4.1.2 and i really like it so dont tell me to change the whole ROM. On all android 4.2 series, there is an option in settings, called "USB internet", which we can use to reverse tether via USB cable. All i want is, the same feature on my 4.1 rom. I am not looking for reverse tethering apps(because they dont work with built in Market App).

Is there any way i can do that?
I can do flashing and have superuser installed(rooted).

Thanks for your help! all i know is only you can help.