How do I jailbreak iphone 4 iOS 6.1.3?

[questions/answers]

And if there isn't a jailbreak for that yet, can you please tell me how to downgrade it to a 6.1.2 or earlier. I appreciate your help?
Can you also give me the iOS file and the redsnow that is compatible with it?
Thank you
The iOS file I was talking about is a firmware

 

[NewYorkInc]

you can downgrade to 6.1.2 with redsn0w.
jailbreakmatrix.com
click on charts
iphone
firmware
and it will tell u what u need.

 

[NewYorkInc]

you can downgrade to 6.1.2 with redsn0w.
jailbreakmatrix.com
click on charts
iphone
firmware
and it will tell u what u need.

 

[leo]

Since evasi0n cracked ios 6.1.2, I used sn0wbreeze and tinyumbrella instead. Download the ipsw file and 6.1.x shsh blob using tinyumbrella. then use sn0wbreeze to actually downgrade the iphone. It's quite simple.

http://www.evasionjailbreak.org/downgrade-ios-6-1-3-to-ios-6-1-2-using-sn0wbreeze-snowbreeze/