UltraSn0w unlock by the iPhone Dev Team is a software unlock for iPhone. Our guides and tutorials will show you how to unlock your iPhone with UltraSn0w.
After recently releasing their jailbreak for iOS 4.3.1 via PwnageTool and RedSn0w, the Dev Team is now getting ready to unleash their UltraSn0w unlock.
The current 4.3.1-compatible UltraSn0w is currently being tested by a few beta testers, and according to a tweet by Dev Team front man MuscleNerd, if everything goes well, UltraSn0w should be released tonight...
MuscleNerd has confirmed that UltraSn0w update is coming for iOS 4.3.1 in a few days. The unlock tool has had several bugs and is currently incompatible with several older basebands.
To clarify: the upcoming UltraSn0w update will not unlock any new basebands. The update is meant for current unlockers that wish to update to the latest 4.3.1 jailbreak and keep their unlock.
Just to preface this before anyone gets the wrong idea; there is still no new baseband unlock available.
Now that the formalities are out of the way, I think it's safe to tell you that new details have been revealed about the existing baseband unlock and its compatibility with the soon to be released untethered jailbreak for iOS 4.3.1.
Depending on when the jailbreak is actually released, if you rely on an unlock, you may have to wait a while until a new version of UltraSn0w is released. This is due to some compatibility issues between iOS 4.3.1 and the current version of UltraSn0w.
Fortunately, you won't have to wait long, as the latest tweets from members of the iPhone Dev Team confirm...
iH8Sn0w has pushed another update to his Windows jailbreak tool for iOS 4.3. Sn0wBreeze 2.3b4 adds some bug fixes and more baseband compatibility.
Sn0wBreeze 2.3 offers a tethered jailbreak solution for iOS 4.3, but the tool is still in beta. This means that stability is not guaranteed, and you should use it at your own risk...
If you've been using an iPhone 4 on basebands 3.10.01 or 2.10.04, your inability to unlock has undoubtedly been an issue of great concern.
Time and time again, we get our hopes up, only to come away disappointed.
Let's give Apple credit, they've done a decent job with keeping these basebands locked down for a significant amount of time, but the gates could be breached in the very near future...
It's official. If you have an iPhone 3G on baseband 06.15.00 and you are unlocked , you better get comfortable. MuscleNerd confirmed in a recent tweet that since the iPhone 3G will not be receiving the 4.3 firmware upgrade, your iPhone 3G will remain unlocked indefinitely.
Now let's not all panic, this only affects iPhone 3G users on the above mentioned baseband. If you are unsure of your baseband version, you can go to settings -> general -> about -> modem firmware. Â For most of us this isn't a huge deal, but to iPhone 3G users who unlocked using the 06.15 UltraSnow unlock, and have been experiencing GPS issues, this is devastating...
The Dev Team has released their Redsn0w beta, dubbed Redsn0w 0.9.7b1 for iOS 4.2. We wanted to alert our readers, and at the same time provide a word of caution about the beta release.
To quote the Dev Team "This is a beta tester program. It’s not a general release!  Things can go very wrong, so please don’t even consider testing if you have pictures or other media on your device that you haven’t backed up!"
For that reason we recommend you hold off until the official release, especially if you rely on an ultrasn0w carrier unlock...
Last month the Dev Team released an update to their UltraSn0w tool which allowed to unlock the iPhone 3G and 3GS loaded with the latest iOS 4.2.1. The iPhone 4 was left out of the equation and unless you're still on baseband 01.59.00, you can't unlock this device yet.
Today, some good news was uncovered about an unlock for the iPhone 4 iOS 4.2.1 baseband 02.10.04 in a tweet sent out by Sherif Hashim. The iPhone hacker confirmed that an unlock for 02.10.04 will be available, most likely before January 16th...
As we reported earlier this week, some of you who have recently updated your baseband to 06.15.00 to jailbreak and unlock have been facing battery drains issues. The problem doesn’t actually come from UltraSn0w or RedSn0w, but from the hacktivation process, for those of you who have hacktivated instead of activating the phone with an official carrier.
The issue comes from iOS 4.1 and 4.2.1 which constantly look for valid push certificates, either via wifi or your data plan (Edge or 3G). This runs down you battery and may even cause your iPhone to overheat. If you didn't hacktivate your iPhone but simply activated it with an official carrier (ie AT&T in the US), you shouldn't have any problem.
If on the other end you did hacktivate your iPhone, you might be experiencing the battery drain issue. Fortunately, there is now a fix for it...
A few people have been experiencing an unusual drain of their iPhone battery after unlocking with UltraSn0w. The problem doesn't actually come from UltraSn0w itself, but from the hacktivation process, for those of you who have hacktivated instead of activating the phone with an official carrier.
According to BigBoss, the issue comes from iOS 4.1 and 4.2.1 which constantly look for valid push certificates, either via wifi or your data plan (Edge or 3G). If you're not on an unlimited data plan, this can get pretty expensive, especially if you don't keep an eye on it.
There are 3 potential solutions for this...
The Dev Team has updated their UltraSn0w iPhone unlock for iOS 4.2.1. UltraSn0w 1.2 will unlock iPhone 4 baseband 01.59.00 and iPhone 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04 and now 06.15.00.
If your iPhone 4 is not on baseband 01.59.00, you will not be able to unlock it. If your iPhone 3G or 3GS is on one of the baseband version mentioned above, then you can follow the instructions below...
We've seen yesterday that we the release of the updated UtraSn0w unlock, there are a few to be met to unlock iPhone 4.2.1. This unlock will work for the iPhone 3G or iPhone 3GS with baseband 04.26.08, 05.11.07, 05.12.01, or 05.13.04. It will also work with iPhone 4 with baseband 01.59.00.
But what happens if you're not on one of those basebands? Depending on your phone model and configuration, you might have to update the baseband to 06.15.00, which is fully unlockable, then unlock using UltraSn0w.
In this tutorial, I will show you how to use RedSn0w to update your baseband to 06.15.00 so you can unlock your iPhone 3G/3GS 4.1.2...