Child born in PAK but now I got ILR do I apply for MN1

Hi every dear

I got ILR on 10year bases. my wife and one child came here in Oct 10 as PBS dependent.
Now I have 2 more kids both born in UK so i can apply for naturalization by using MN1 form but some one told me that I can apply for my elder son as well because he spent 3yrs with me in UK (he was born in PAKISTAN)

My Question is
Is above information is correct ?
Do I apply for naturalization for my elder son born in Pakistan but live with me more than 3yrs?
If I do apply, Do I use MN1 form?

Please i will be very grateful please give me direction I really need guidance
thanks

In the light of things, given that the two siblings are being registered, the child stands a good change, perhaps more so when the Mother has ILR. However, a recent Court case was persuasive without the needs for the parents to be British.

Thank amber

Please forward me any ref? or link ? for recent court case.

Thanks alot

R (on the application of FI by his litigation friend GI) [2014] - http://www.bailii.org/ew/cases/EWHC/Admin/2014/2287.htm