link for ios 6.1.2 for iphone 4s please ???

Why? download it from within iTunes on computer.

If you're looking for a direct download link, use some self reliance and do a simple google search.

As always, updates are accomplished by way of iTunes on your syncing computer. No link required.

Follow this link:

http://appldnld.apple.com/iOS6.1/091-0926.20130215.DaTe4/iPhone4,1_6.1.2_10B146_ Restore.ipsw