The iPhone DevTeam has released a new version of Ultrasn0w unlock to fix an issue that some users have reported while running on firmware 3.1.2 with the 04.26 baseband that resulted to missing carrier logo.
Today we released an ultrasn0w update that fixes an issue for those running firmware 3.1.x with the 04.26 baseband. That specific combination resulted in a missing carrier name in the upper left-hand corner of your home screen. TodayÂ’s ultrasn0w update from 0.91 to 0.92 fixes that problem (which was an important issue for roaming). You should see the update available if you have http://repo666.ultrasn0w.com as a Cydia source. Enjoy!
Via Dev-Team Blog