With iOS 4, Apple introduced iAd program so that developers can generate some revenues whilst keeping their apps free in the iTunes App Store. While the ads delivered by iAd are interactive and all, they are still of annoyance for most users. And so if you like your apps ads free, you can disable them all using a free app called iAdKiller for jailbroken iPhones and iPod touches.

In an unexpected update to his last blog post titled “Meh”, Geohot has announced that he, for the time being at least has kind of abandoned the whole iPhone jailbreak and unlock scene. The reasons according to him are as follows.

After months of silence, Geohot has finally published a new blog post in which he talks about iPhone 4 jailbreak situation, limera1n, and Pwned4life exploit which he recently talked about at the Nuit Du Hack conference in Paris. According to his latest blog post, he has managed to jailbreak his iPhone 4 the day it got delivered to him by mail. This is what he writes on his blog:

According to a recent tweet by a twitter user @MaxdMerc, a guy working at the Apple Store, Lakeside (UK) has reportedly confirmed that the next firmware update might be delayed slightly due to Apple working on a fix to patch the hole, recently used to jailbreak iOS 4. This however shouldn’t be surprising as almost all firmware updates in past have been used to block the exploits used to jailbreak the previous firmware versions.

Sn0wbreeze 1.7 for 4.0 has been released. Just like PwnageTool 4.0 / 4.01 for Macs, you can now create custom pwned / jailbroken ipsw files on Windows too which can now jailbreak all iOS devices (except iPhone 4) on iOS 4, including iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G. But there is a catch to it! You will need to have their SHSH blobs saved for iOS 3.1.2 in order to successfully jailbreak these devices on iOS 4. Also the jailbreak for iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G on iOS 4 will be tethered, which means whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on.

Sn0wbreeze 1.7 for 4.0 (for Windows) has been released. This release supports iPhone 3GS (old and new bootrom), iPhone 3GS, iPod touch 2G (MC and non-MC models), and iPod touch 3G. Though iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G will have to be either on 3.1.2 firmware, or will need to have their SHSH blobs saved for iOS 3.1.2 in order to successfully jailbreak these devices on iOS 4. Also the jailbreak for iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G on iOS 4 will be tethered, which means whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on.

Internet Tethering is a process which allows you to use your iPhone as a wireless modem to share its Internet connection with a computer via USB cable or Bluetooth interface. The iOS for iPhone has this functionality (wired-only) built into the operating system but it is only enabled on selected carriers. Fortunately, there is an app called “MyWi” for jailbroken iPhones which can enable wireless tethering on any carrier you like with just a touch of a finger!

Ok guys.. Mac version of the guide is now up! (Windows version can be found here) The requirements though as mentioned earlier remains the same. You will need a iPhone 3GS (with new bootrom) on iOS 4, which has SHSH blobs saved for iPhone 3.1.2. Some other important notes about the jailbreak are as follows.

iH8sn0w – the developer behind popular iPhone jailbreak tools such as sn0wbreeze for iPhone 3.1.3 / 4.0, f0recast and BlackBreeze has just written a detailed tutorial on how to jailbreak iPhone 3GS (with new bootrom) on iOS 4. But as I mentioned earlier, there is a little catch to it. 1) it is a tethered jailbreak (whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on) and 2) it will only work for those devices which have their SHSH blobs (ECID SHSH) files for 3.1.2 (NOT 3.1.3) saved on Cydia.

When iOS 4 jailbreak first came out, it was only compatible with iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (non-MC models). Things were even more trickier for iPhone 3GS. These 3GS devices were not only required to have old bootrom, but they were also required to have previously been pwned or jailbroken on anything (like blackra1n) other than Spirit.

The new Game Center which was available for testing purposes on pre-release GM version of iOS 4 was removed from the final public build which was released on June 21st. This was because Game Center was not ready for primetime use and so Apple rightly removed it from the final build. If you saved the Game Center files from iOS 4 GM build, you now can get it installed again on your jailbroken iOS 4 device.

There is a new video going around in the wild which shows iPhone 3GS (with new bootrom) on iOS 4 jaibroken using an upcoming version of Sn0wbreeze. This video has been confirmed by iH8sn0w – the developer behind popular iPhone jailbreak tools such as sn0wbreeze for iPhone 3.1.3 / 4.0, f0recast and BlackBreeze as legit.