Well, I had 4.2.1 a bit ago, and jailbroke it with GreenPois0n. I accidentally went to 4.3.1, and had to downgrade. Now, when I try to jailbreak with GreenPois0n, it just stays at "Jailbreaking.." and the meter doesn't move; and it sticks my iPod in the 10XX recovery loop, which I fixed using Tiny Umbrella. This is the latest version, that I downloaded straight from the GreenPois0n website. Any help would be appreciated a lot, thanks in advance.
-Rokurai