I was warned that there is a version of the solution on the Internet jailbreak for 3.1.3 firmware called Spirit and I want to warn you NOT to try that program because it is most likely 100% fake. Dev Team he didn't make any official announcement about the launch of Spirit, and for the program to miraculously appear now after a month and something of waiting seems unlikely to me.
So, if you download the respective version, you do so at your own risk and again at your own risk!
I know you've been waiting for the release of Spirit for a long time, but be patient, it will be available soon, the Dev Team gave a little break to those who just bought iPad 3G to save their SHSHs.
Thanks radu_h.
