Can you jailbreak iOS 6.1.4?

I'm bidding on eBay for a Sprint iPhone 5 (Firmware 3.04.25, Version 6.1.4) can I jailbreak it and connect it with metro pcs?
My little sister changed my phone's password (iPhone 4 which is jail broken and works with Metro Pcs) when I connected it to iTunes it says that my phone will be restore and update to the newest software. Is there any way I could restore my phone without updating it?

No there's currently no jailbreak for iOS 6.1.4 you can use a custom ipsw if you have ssh blobs