6.1.3 is at the beta stage , wont be long before apple roll it out, this will Kill your jailbreak from Evasi0n , in order to have any chance of being able to downgrade via your shsh blobs either go into cydia and download iShShit make sure its the 1.1.5 version, or downloaded tinyumbrella from The Firmware Umbrella - TinyUmbrella
