The iPhone Dev Team today has released an updated version of Ultrasn0w unlock to fix signal bar issues on iOS 4.3.1 compatible iPhones, running on the old baseband.

MuscleNerd of iPhone Dev Team has confirmed that an updated version of Ultrasn0w unlock will be released in the next few days to fix signal bar issues on iOS 4.3.1 compatible iPhones, running on the old baseband.

Yes you read that right! The same source who earlier provided us with screenshots of iPhone 4, unlocked to work on T-Mobile US using Gevey SIM has just provided us more proof to confirm that it can also unlock iPhone 4 on the latest iOS 4.3, Baseband 04.10.01.

The Gevey team has announced a new unlocking method for iPhone 4 users who are stuck on iOS 4.2.1, with 2.10.04 or 3.10.01 baseband.

As we all know by now, the exploit which iPhone Dev Team, including MuscleNerd and Sherif Hashim, thought would work to unlock iPhone 4 on 2.10.04, 3.10.01 and 4.10.01 basebands unfortunately turned out to be a no-show in the end.

Good news for iPhone 4 unlockers as we have yet another update, this time from none other than the man who actually works on the Ultrasn0w, MuscleNerd of iPhone Dev Team!

Its been a while since we last heard or read anything on the upcoming iPhone 4 unlock for 3.10.01 and 2.10.04 basebands. MuscleNerd of iPhone Dev-Team has already confirmed that unlock for iPhone 4 on newer basebands wont be released until Apple drops iOS 4.3 to public.

As we reported earlier, both PwnageTool 4.2 for Mac and Sn0wbreeze 2.2 for Windows are now available which can preserve baseband, and jailbreak iPhone, iPad and iPod touch on iOS 4.2.1 firmware.

This year’s Pwn2Own contest will play host to a new world of mobile phone hacking when security researcher Ralf-Philip Weinmann shares a new way of hacking a cellular device, writes ReadWriteWeb’s Sarah Perez.

Here is a quick little heads up for those of you who have been waiting for iPhone 4 unlock on 3.10.01 and 2.10.04 basebands. MuscleNerd of iPhone Dev-Team has confirmed now that no unlock will be released until iOS 4.3 / 4.2.5 (whichever is last) is public.

Redsn0w 0.9.6b5 has just been released which can jailbreak and update iPhone 3GS & 3G baseband to 06.15.00 so that it can be unlocked using the newly released Ultrasn0w 1.2.

A special edition of PwnageTool (version 4.1.3) has been released which can update the baseband of iPhone 3GS & 3G to 06.15.00 so that they can be unlocked using Ultrasn0w 1.2 on the latest iOS 4.2.1 or iOS 4.1 firmware. This is important because basebands 05.14.xx and 05.15.xx are currently not unlockable using Ultrasn0w.