Iphone 4s activation locked?

I just bought an iphone 4s and i can't use it because i don't know the old users apple id and password, is there any way to get past this and use the iphone? The old user isn't replying to my emails so i'm fcked in that department

Your going to have to restore it

check iclarified.com on tutorials and firmwares

if you want older ios… Then download from them… Then in iTunes, instead of just hitting restore… Hold shift down, then you can pick the one you downloaded