Earlier this month geohot released the iPhone OS 3.1.2 jailbreaking software blackra1n for all who were interested. Today, he has released blackra1n RC2 that fixes a number of issues that came from the original release.

These issues including 3G signal problems, issues with “Icy”, Tethered jailbreak for 3.1 OOTB ipt 8GB and new 3GS’ and releasing a version for both Windows and Mac.

As always, jailbreak at your own risk, but if you’re into this kind of stuff head here for more information.