While we are all waiting for jailbreak tools for iOS 4.1 (based on SHAtter exploit) to release officially, a fake tool is floating around the interwebs under the name of GreenPois0n which is claiming to jailbreak all iOS devices from 4.0.2 and above. The fake tool is actually a very dangerous malware which upon running which steal passwords (though it is not clear if it steals passwords from your iOS device or PC). I repeat: it is not the real GreenPois0n tool which is expected to jailbreak iOS 4.1 on iPhone 4, iPod touch and iPad.

Ok guys let me clear this upfront. I haven’t tested this method yet, but by the looks of it, there is no reason why it shouldn’t work. If you have just got a new iPhone 4 or iPhone 3GS (new bootrom) which is on iOS 4.0.2, you can now downgrade to iOS 4.0.1 without having your SHSH blobs saved. This will of course allow you to jailbreak and unlock your new iPhone with JailbreakMe, and patch it with PDF Patch so that you are safe from PDF vulnerability in iOS 4.0.1.

The iPhone Dev-Team has just posted an update on their official blog, giving warning to all those with newer devices like iPhone 4, iPad (on iOS 3.2.2), iPhone 3GS (New bootrom) and iPod touch 3G / 2G (MC-Model) to not update to iOS 4.0.2 as they wont be wasting another exploit for this minor firmware update. Instead, the focus will now be on finding a new exploit which could be used on the next major firmware update i.e. iOS 4.1. I’ll say that is a good move on their part given that final version of iOS 4.1 could be out as early as next week.

Apple CEO Steve Jobs has confirmed that a new software update for iOS 4.x will be rolled out soon to fix performance woes on iPhone 3G, running iOS 4.x. He confirmed this in a reply to an email, sent to him by a user who expressed his frustration over the performance of his iPhone 3G on iOS 4, calling it ‘”dog slow”.

iPhone 3GS (old bootrom only) has been jailbroken successfully on iOS 4.0.2 (custom firmware) using the upcoming Sn0wbreeze 2.0 for Windows. For those of you who don’t know, Sn0wbreeze 2.0 has been developed by the same iPhone developer / hacker which has previously released sn0wbreeze for 3.1.3, sn0wbreeze for 4.0, f0recast and BlackBreeze.

Many of you asked for it and so here is the detailed guide on how to downgrade your iPhone 4, 3GS, 3G and iPod touch 2G / 3G running iOS 4.0.2 to iOS 4.0.1 / 4.0 / 3.1.3 / 3.1.2. The following step by step guide will help you rollback / downgrade to iOS 4.0.1 / iOS 4, iPhone 3.1.3 and 3.1.2 from iOS 4.0.2 as long as you have SHSH blobs saved for the respective firmwares for iPhone 4, iPhone 3GS, iPhone 3G and iPod touches.

Yesterday, Apple released the iOS 4.0.2 for iPhone 4, 3GS, 3G, iPod touch 3G / 2G and iOS 3.2.2 for iPad to fix the PDF exploit which was used by JailbreakMe.com. Since the nature of exploit was highly vulnerable, Apple recommended everyone to update to this new firmware in order to secure all iOS based devices. This of course also meant that jailbreak and unlock for iPhone 4, 3GS, iPad and iPod touch 3G on iOS 4.0.2 / 3.2.2 will not be possible for these mentioned devices.

While Apple has released iOS 4.0.2 for iPhone 4, 3GS and 3G, the important thing is that they haven’t updated the baseband. What this means is that 05.13.04 baseband which accompanies iOS 4.0.2 is still unlockable with ultrasn0w provided that you manage to jailbreak your iOS device. At the moment, only iPhone 3G and iPod touch 2G (Non-MC model) can be jailbroken on this latest firmware using the latest version of Redsn0w. So technically, you can only unlock iPhone 3G on iOS 4.0.2.

Ok guys I just tested it on an old iPhone 3G lying around and can confirm that this works! Now that Apple has released iOS 4.0.2 to patch the PDF exploit, JailbreakMe which was previously used to jailbreak iOS 4.0.1 on iPhone 4, 3GS, 3G, iPod touch 3G / 2G and iPad is now incompatible with iOS 4.0.2. But if you have iPhone 3G (which doesn’t rely on an unlock) or an iPod touch 2G (non-MC model) lying around, you can jailbreak it using the existing version of Redsn0w. Simply follow the step by step guide posted below to jailbreak the mentioned devices on iOS 4.0.2 using Redsn0w.

Apple has just released iOS 4.0.2 for all iPhones, iPod touches, and iOS 3.2.2 for iPad to patch the PDF exploit which was used by JailbreakMe to jailbreak all iOS devices on iOS 4.0.1. If you want to keep your jailbreak and unlock, you better not update to this latest firmware now or you will be out of luck for long. Incase you have decided not to update, make sure you use PDF Loading Warner app which will make your web browsing safe. Of course if you care about security of your iPhone, then you can go ahead and update to the latest firmware from iTunes.

There are rumors flying left and right about Apple releasing the iOS 4.0.2 firmware for iPhones and iPod touches and iOS 3.2.2 for iPad in only a few hours from now. This update will patch the PDF exploit which is used by JailbreaMe to jailbreak all iOS devices. If you accidently update to iOS 4.0.2 / iOS 3.2.2, it will be impossible for you to jailbreak and unlock straight away until a new tool is available. The only way you can jailbreak again will be by downgrading back to iOS 4.0.1 or iOS 4 for which you will need your SHSH blobs.

Apple today has confirmed to CNET that they have investigated the exploit used by JailbreakMe 2.0 and that they have already developed a fix for it which will be released in a form of new firmware update soon. The spokeswomen of Apple though didn’t give any specific release date as to when will it be pushed, but knowing Apple, it wouldn’t be too long before it is released for all iOS devices.