iPhone OS 4.0b4 jailbroken by redsn0w 0.9.5beta4 – Here’s what you need to know.

Well boys and girls, we all knew that it was coming. Just a few days ago, the iPhone Dev-Team released an updated version of their popular redsn0w jailbreaking tool which can now currently jailbreak the OS4 beta 4 software released by Apple. This build is a much more stable version than the previously jailbreakable 4.0 beta 1, but we still cannot stress enough that that for the average consumer, this is not the ideal situation. These jailbreaks come with a lot of conditions, such as the fact that it will only work with a Mac, on the 3G, on a device with a UDID registered to Apple on one of their developer accounts. It WILL upgrade your baseband meaning that you will not be able to unlock, and as it is still an unfinished product, it WILL give you errors and behave sporadically. That is why this is a BETA release. If you want stability, then please wait for the official version (or at least the “GM” gold master) to be released so that you can enjoy all of the benefits that 4.0 has to offer.

Now with that being said, here are the pertinent details;

• The latest Redsn0w jailbreak tool only works on iPhone 3G.
• This beta version does not perform hactivation. Users will require an Apple UDID to get past the activation screen in iTunes
• Redsn0w 0.9.5 beta 4 works only on Mac OSX and does not have a PC version of the software. This was intended for developers, and in order to be a developer, you must have a MAC computer.
• Do NOT use Redsn0w if you rely on an unlocked iPhone. This is because the iPhone OS 4.0 beta 4 contains a baseband update, which cannot be software unlocked. You have been warned!

And as always, the obligatory download link: http://wikee.iphwn.org/howto:rsbeta