Good news from DevTeam. They just announced via twitter that unlock for firmwares 3.1.3 and 4.0 is ready:
RT @MuscleNerd: ultrasn0w tips: 1) Works for all basebands since 3.0 FW 2) Remember to disable 3G on T-Mobile USA
ultrasn0w 0.93 released! Cydia repo is repo666.ultrasn0w.com. Works with basebands 04.26.08 thru 05.13.04
This means, that all users with basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04 can use ultrasn0w 0.93.
There is no jailbreak for just released iOS4, so you need to wait a bit. Firmware 3.1.3 who need unlock can update ultrasn0w and use their iPhones with any carrier.
Today DevTeam released an ultrasn0w update that fixes a bug for those who run it on firmware 3.1 and 3.1.2 with the 04.26 baseband. This bug was about a missing carrier name in the upper left-hand corner of your home screen. The update is avaliable in Cydia (repository http://repo666.ultrasn0w.com).
We remind you, that ultrasn0w 0.92 doesn't work with baseband 05.11.07!
[Update]: if your 3G or EDGE connection isn't working try manually clearing and re-entering your APN.
[Update 2]: Carrier logo fix confirmed (by order of tweet):
USA, Thailand, Austria, Trinidad, Germany, China, Kuwait, Serbia, Poland, France, Nigeria, Egypt, Pakistan, Ireland, UK, Turkey, Sweden, Switzerland, Malaysia, Hungary,The Netherlands, Bahamas, Jamaica, India,
Israel, Belgium, Canada, Portugal, Denmark, Costa Rica, Italy, Chile, Argentina, Brazil, Japan, Mexico, Venezuela, UAE.
The Dev-Team, after a little advice last night, has released an updated for ultrasn0w, the tool that provides unlock for the iPhone 3G and 3GS.
Through a message on Twitter we found out that this new version fixes a slight bug that appeared when we turn off Airplane mode. So if you have problems - go ahead and update. The update is also recommended for everybody else.
Avaliable in Cydia, repository http://repo666.ultrasn0w.com.
DevTeam updated ultrasn0w. They removed the daemon and used ideas of GeoHot's purplesn0w, but implemented these ideas in a better safer way. New ultrasn0w 0.9 uses 152 bytes of baseband RAM, which is 6900 timesless than purplesn0w. They also use mobile substrate to patch CommCenter, instead of patching the file itself.
Here is a list of features from DevTeam.
Works on both 3G and 3GS.
Works on hacktivated devices.
Works regardless of how you jailbroke your device.
Doesn’t patch any mach-o binary whatsoever. (Doesn’t require a separate patch as each new firmware comes out).
Doesn’t install any additional daemon
Has no race conditions, no popups about “Missing SIM”, no network issues
Is almost 7000 times smaller than its nearest competition
Sn0wBreeze 2.9.6(pwnagetool for windows, supports untethered jailbreak of iOS 5.1.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad and Apple TV 2G)
Sn0wBreeze 2.9.3(pwnagetool for windows, supports tethered jailbreak of iOS 5.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad; untethered for iPhone 3GS with old bootrom; untethered for iOS 5.0.1, iOS 4, iOS 3 supports Apple TV 2G)
Sn0wBreeze 2.8b11(pwnagetool for windows, supports iOS 5, iOS 5.0.1, tethered jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad, Apple TV 2G; untethered for iPhone 3GS with old bootrom)
Current version is ultrasn0w 1.2.3, download in Cydia (unlock for iPhone 4, iPhone 3GS, iPhone 3G, firmwares 3.0-4.3.3; it supports basebands 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00)