jailbreaking the iphone 3g with 3.1firmware.

I recently tried to jailbreak my iphone 3g with the 3.1 update. I used redsnow with the 3.0 firmware but wasnt able to successful jail break my phone. I then read that if you update your iphone 3g to the 3.1 firmware, that the would would be able to jail breakable. the new way would be to use ultrasnow and jail break with the 3.1 firmware. the phone has to be 3.0 or 3.0.1 or else it wont work. i would have to wait for the need update of ultra snow because i already update my iphone to 3.1 without the ultrasnow. So if you plan on jailbreaking your iphone 3g with the 3.1 firmware, i suggest u do it with the 3.1 jail break on a 3.0firmware. until further notice.