I've had a 3GS for a while now, got it with 4.0.1, jailbroke immediately. I've had it jailbroken, untill today. Cydia had an update for a theme, so I downloaded it. I didn't know that it didn't have enough disc space, so apparently what I think happened was that it downloaded it halfway, and I rebooted the device.

Now it gets to the apple logo, the wheel turns, it waits in the same position, and then shits down, restarts, and repeats the process.

I got home, put it in recovery mode ( I panicked! I didn't want to lose my phone!) and restarted my whole thing.

Now it has 4.2 with baseband 5.13.02. My question is;

How do I get it jailbroken?

I miss Cydia. The iPhone stock is boring and not customizable at all.

Please help me, it would be greatly appreciated!!