Updated 4.2.1 iPhone 4 Unlock and Jailbreak?

I have just entered the jailbreak/unlock world, and am looking to find the most updated baseband that can possibly be unlocked. I have jailbroken via redsn0w, but since I have 3.10.01 baseband I cannot unlock. I do need to unlock, so would I have to go back down to 1.59.00 (on 4.0 or 4.1?) or could is my information outdated?

If the former, does anyone have any information for when the 3.10.01 unlock is supposed to be out?

Hi. You can unlock your iPhone without jailbreaking itself. You can visit OnlineGSMUnlock.com and get the remote unlocking service for your iPhone. This method of unlocking an iPhone is safe, simple, affordable, quick and permanent. It doesn't require a jailbreak too. Good luck.