So you have an iPhone 4 or iPhone 3GS (New Bootrom), running iOS 4.0.1, with SHSH blobs saved on Cydia, and you want to restore your iPhone again to iOS 4.0.1. Now that Apple has stopped signing iOS 4.0.1, you wont be able to restore your iPhone 4 on iOS 4.0.1 by simply pointing iTunes to iOS 4.0.1 ipsw file. Because if you do so, iTunes will throw an error: “This iPhone [your name] iPhone could not be restored. This device isn’t eligible for the requested build.

We have been constantly getting reports from our readers, both by email and in comments about JailbreakMe.com being down for them. If you are unable to access JailbreakMe.com on any if your iOS device, try out the following fixes. One of these will hopefully fix the problem for you so that you can jailbreak your iPhone, iPad or iPod touch.

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.

JailbreakMe has to be hands down the easiest jailbreak method ever, but since it uses userland exploit like Spirit, it doesn’t hacktivate phones. iPhone dev and hacker named Sherif Hashim came up with a way to activate phones without having the original SIM cards but now it seems like Apple has found out about the phonebook SIM card trick and they have blocked it. And so if you activated your phone using phonebook SIM card, you will be getting the dreaded “Different SIM Detected” error on your lockscreen as shown in the screenshot below.

Just a quick heads up for those of you are still stuck at Purple-colored (space) screen when jailbreaking iPhone 4, 3GS, iPod touch or iPad using JailbreakMe 2.0. As most of you might have already read it on our Facebook fanpage, the problem is caused because of cache which needs to be cleared before you can jailbreak your device. The instructions are as follows.

I just found out about this fix from Redmond Pie’s Facebook fanpage and thought I should share it with you all. If you cant wait for JailbreakMe update, here is a quick possible fix for FaceTime and MMS issue on iPhone 4 after jailbreak using JailbreakMe 2.0 (Star). Simply follow the step by step guide below to fix the issue.

The iPhone Dev-Team (Comex) has released JailbreakMe 2.0 (aka Star) which can jailbreak all iOS devices on their latest respective firmware like iOS 4.0 / 4.0.1. This does not work with iOS 4.1 Beta release. Since JailbreakMe 2.0 is a userland jailbreak, what this means is that you run it right in your iOS Safari browser to jailbreak the device. It cant get simpler than that !

JailbreakMe 2.0 Star is the name! – The userland jailbreak for iPhone 4, iPhone 3GS, 3G on iOS 4 / 4.0.1, iPod touch on iOS 4, and iPad on iOS 3.2.1 is out !!. It is a browser based jailbreak, all you have to do is to browse to http://jailbreakme.com from your iOS device to jailbreak it. Servers are probably thrashed right now. Keep trying until you successfully load the page. We will be back with quick how-to guides soon. Stay tuned for that !!

Here is a quick update on the upcoming Comex’s jailbreak for iPhone 4 and iOS 4 / 4.0.1. It was only yesterday when we informed you all that Comex in an interview said that he is “almost” done with the jailbreak and now he is waiting for Saurik (the creator of Cydia) to complete the last bits which are required for the jailbreak.

Listening to an all-star podcast interview which involved iPhone devs like Comex, Planetbeing, Chpwn and iH8sn0w who are working on jailbreak and unlock scene, there was this question which the hosts asked the devs about when is the iPhone 4 and iOS 4.x jailbreak is expected to be out. While no specific release date was given, they did said that jailbreak is “pretty close to done”. They are now waiting for Saurik (creator of Cydia) to fix couple of loose ends before it is released. iPhone 4 unlock on the other hand is 100 percent done and is waiting for jailbreak to be released.

This will erupt lots of cries and disappointment but this was important to post as I know many of you have been really looking forward to it. Contrary to the popular believe that the new Spirit like all iOS device jailbreak will be released this weekend, the most vocal of all iPhone Dev-Team members MuscleNerd has confirmed that the new jailbreak wont be released today. This slight delay is because of some of the important iPhone 4 apps like FaceTime which are having issues after jailbreak. As MuscleNerd rightly said, there is no point in releasing a half-baked jailbreak tool which causes issues for the end-users.

PwnageTool bundle to jailbreak iOS 4.0.1 on iPhone 3GS has been released. You can use this bundle with existing version of PwnageTool to create custom firmware files which are jailbroken and hacktivated for iPhone 3GS. The best thing about this bundle is that it supports both the ultrasn0w unlock and hacktivation. But as always, this bundle is meant for iPhone 3GS with old bootrom only. Those of you who are with new bootrom will have to wait for Comex’s new Spirit like jailbreak tool which should be released real soon.