As you know Apple dropped iOS 4.0.1 for iPhone 3G, iPhone 3GS and iPhone 4 in response to wrong signal calculation. This is a minor update and no major changes in baseband update and jailbreak protection, at least for iPhone 3G. We already posted a complete how to guide on how to Jailbreak iOS 4.0.1 for iPhone 3G with Redsn0w. Following are the instructions to unlock iPhone 3G with iOS 4.0.1
Note : Ultrasn0w is being updated to fix Mobilesubstrate issue, hold for a little while. 

Instructions to install ultrasn0w using cydia

Step …

Saurik developed a great way to get your signature files in Cydia regardless of the firmware you are running, but it requires a jailbroken phone. Apple is almost ready to release iOS 4.01 while iOS 4.1 is distributed to developers, on the other side iPhone Dev team achieved a full jailbreak and unlock of iPhone 4 iOS 4. So it is highly recommended to save your SHSH, so you can downgrade back to iOS 4 any time. Since iOS 4 jailbreak isn’t public at the moment you can save your …

Geohot,breaks his long silence with a blog posting, where he talks about the jailbreak of the iPhone 4. He has succeeded to jailbreak his iPhone 4, but seems to have no plans to bring limera1n. Indeed, the more people ask for a release date, the less pull Geohot seems to have the release of the jailbreak tool. Geo says when the time is appropriate and tool is ready he’ll made the tool available in public! In the meantime, you should keep your eye at a new program by Comex Jailbreak …

MyWi, infamous iPhone tethering app is now fully updated to support with iOS 4. MyWi 4.0 enables tethering on your jailbroken iPhones (including 2G/3G/3GS) and iPad on 3.1.2 or later. MyWi creates a personal Wi-Fi hotspot. Installation of MyWi is very simple, In Cydia, search for “MyWi.” Tap on the search result for the app, tap the “install” button in the upper-right corner, then tap “confirm.” When installation is complete, tap the “Reload SpringBoard” button. (If this part gets stuck, just reboot your iPhone).
MyWi Pricing : MyWi costs $19.99 for …

Dev team achieved successful jailbreak of iPhone 3G, iPhone 3GS (incl. New Bootrom) and much awaited iPhone 4. According a recent tweet of Musclenerd “ jailbreak for all devices at 4.0 is already handled by upcoming @comex release so, good time for iphone4 unlock stuff “ Comex is the same person behind Spirit Jailbreak, Spirit was the first and only untethered  jailbreak for iPhone 3GS firmware 3.1.3

According to recent tweets of Musclenerd and Planetbeing it seems that they are in possession of some iPhone 4 and Comex unreleased jailbreak and …

So You got your iPhone 4 and you can install hundred of thousands of apps from AppStore. You got multitasking, folders, custom backgrounds and lots of other features. We already getting questions / mails from our regular and new readers regarding, What’s all this commotion about jailbreaking iPhone 4? Why would you need to jailbreak? What does it offer? Is jailbreaking legal ? etc. etc. In the post, I will cite some of the most compelling reasons to jailbreak / unlock your iPhone.
Note : iPhone 4 jailbreak isn’t available at …

The iPhone 4 is the fourth generation of iPhone, and successor to the iPhone 3GS. It has an Apple A4 processor, 512 MB of eDRAM, a 3.5 inches (89 mm) LED backlit liquid crystal display with 960-by-640 pixel resolution, and the iOS 4 operating system. We already shared iPhone 4 vs iPhone 3GS Head to Head and iPhone 4 vs Nexus One vs Evo 4G vs Droid Incredible with you. Now it’s time for comparing HTC EVO 4G, Nokia N8, Palm Pre Plus and HTC HD2 vs iPhone 4. Comparison …

Last year Apple updated iBoot of iPhone after 4 months of it’s release, so there are two types of iPhone 3GS available in the wild, first are with old iBoot version 359.3 and others are new iBoot version iBoot: 359.3.2  The bootrom is a snippet of code that runs at startup time, and checks on the status of the boot image. It’s generally used to verify that the image has not been corrupted, but can also be used to check for unauthorized firmware.
Older bootrom are exploitable with 24kpwn vulnerability, so …

Some lucky people who pre-ordered iPhone 4, got their iPhone two days earlier. AppleMojo, posted some pics of the very first unboxing of iPhone 4 on MacRumor. According to him “ FedEx just dropped off my iPhone 4 just a few moments ago. As of last night before bed, my delivery date was still the 24th, even after I received the email from Apple about a possibly delivery on the 23rd. Activation was snappy and smooth. “ Those who opted in store pickup will have to wait until Thursday morning.
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Geohot “Wonder Boy” is cooking something interesting, actually very interesting. GeoHot is currently in Paris for “Nuit du Hack”, one of the oldest French underground hacking conference. Also known as “Night Hack”. In the Paris, Geohot  explained how he managed to Jailbreak and unlock the iPhone with his two most popular tools: Blackra1n and Blacksn0w.
During the conference, he said that he discovered a new private bootrom exploit, which is called pwned4life. This new exploit may be useful for iPhone 4 jailbreaking,hold your horses, we’ll keep you updated as soon as …