In the attached picture you have a tweet from an unknown person who talks about a hacked version of blacksn0w that also works on 3.1.3 firmware. The person gave him a message iH8sn0w asking him to introduce it in sn0wbreeze because users with baseband 05.11.07 to be able to pass with the help of a custom ipsw to 3.1.3 firmware.
For now it is not known if that version of blacksn0w works correctly with 3.1.3 firmware so we have to wait for his tests iH8sn0w to find out if we will be able to use blacksn0w on 3.1.3 firmware but I come back with the above idea, DONATE users with baseband 05.11.07 those with baseband 05.12.x will be able to use it NU they will be able to use blacksn0w.
Daca blacksn0w can be modified to work on 3.1.3 firmware, there may be chances as well blackra1n that it can be ported, but for now it remains to be seen what it says iH8sn0w about blacksn0w.
