After Updating ios 7.1.2 Carrier Settings, Cellular data Network menu is disappeared and cannot use Internet using cellular data.

I have updated to ios 7.1.2 and everything work fine and i can use internet using cellular data. but when I connect to itunes it tells me that and update to ypur carrier setting is available. and when I updated this setting Cellular data Network menu is disappeared and cannot use Internet using cellular data.

it gave me this to learn more to read but nothing sort out

iOS: Updating your carrier settings

But here in my region iphone does't support any carrier. ( I am from Pakistan By the Way ). so how can an update be available for my carrier ?? and I am not able to use cellular data. how do I get back Cellular data Network menu

Please someone help!!