A few days ago will said that there is a hacked version of blacksn0w which is rumored to work on 3.1.3 firmware and since then I've been waiting for confirmation from those who tested it, but no one rushed to test it, anyway the hacked version exists on a beta repo so it can be installed anyway by anyone who wants to test it.
So if you want to test the hacked version of blacksn0w that would also work on 3.1.3 firmware all you have to do is add in Cydia source: http://cydia.ih8sn0w.com/pirate and install blacksn0w. CAREFUL!!! It is an unverified version of Geohot, I DO NOT I am responsible if that version of blacksn0w will break your phone, all you do is AT YOUR OWN RISK!
Some say it works for them, others say it doesn't, anyway to test it you have to have one iPhone 3G / 3GS cu 3.1.3 firmware si baseband 05.11.07, so you have to use a custom ipsw to switch to 3.1.3 firmware.
ONLY test it if you know what you're doing, this version of blacksn0w it will not decode baseband 05.12.01 so don't try for nothing. If you have tested it, please leave a comment with your results.
