"While I realize there is not a lot of people that are actually on the older baseband, 04.26.08, there has been an update pushed by the Dev-Team, thus releasing an ultrasn0w update that allows users with the older baseband to unlock their iOS 4 GM device.
This is an official unlock fromt he Dev-Team for baseband 04.26.08, however there will not be a release for other basebands until iOS 4 is released publicly.
You can install ultrasn0w by adding http://ios4.ultrasn0w.org to your Cydia source list (do not use the repo666.ultrasn0w.com repo because that still has the older version 0.92). Note: ultrasn0w is spelled with a zero, not the letter “o”.
Once again, if you are not familiar with all of this, please hold off until the public release when iOS 4 hits the streets."
Please visit www.iPodSets.com
-- Post From My iPad