How did you upgrade your iphone 4 to 4.1 while preserving the baseband? I thought that an upgraded pwnagetool hasn't been released yet to do this? If I'm missing something please let me know, if you were able to do that you can easily downgrade software to 4.0.1 and be unlocked as you have not changed the baseband so you are not losing anything by trying limera1n and ultrasnow, if it doesn't work then you can downgrade, am I missing something? Thanks.
...From there.. jailbreak using limera1n? Hmmm...
Thanks Guys. Didn't think tinyumbrella could do this, awesome. Ok, let me know if anyone tries it...