Looking for some answers please help

I have an iPhone 4s with 7.0.4 installed. I also have shsb blobs 6.1 and 6.1.2 saved from tinyumbrella. I have iTune installed on my windows computer im not sure which version though.

I've searched the web using google to find some answers before coming here. Can i downgrade my iPhone back to 6.1 or 6.1.2?

From what i've been reading only the iPhone 4 can do this and not the iPhone 4s.

thanks in advance.