It looks like posixninja beat Musclenerd to the punch. Green poison RC5 is out and provides an untethered jailbreak.  The exploit used is already known to be patched in the upcoming 4.3 firmware so it made sense to get it released as soon as possible. Currently only the OSX version is out but a Windows version is on its way out as well. You can it from http://www.greenpois0n.com/

Note: this version does not provide hacktivation.

And a note from Musclenerd:
For those having trouble getting Cydia via the GP Loader, just let redsn0w install it (don’t choose the Monte option)

For those having problems in osx v10.5.x try this: http://www.gadgetsdna.com/jailbreak-ios-4.2.1-with-greenpois0n-rc5_2-on-mac-os-x-leopard/8634

iSmart Dialer+ just got a total face lift for iPhone 4 retina display. all the icons and graphics inside the dialer itself will now look amazing to the ones that have an iPhone4

AdBlocker is an easy to use and powerful tool, similar to extensions for your desktop browser. It blocks ads in Safari and other apps which are using browser-like views (UIWebViews). If an app is using UIWebViews to display content (other browsers like Skyfire, browser in a twitter client,…) AdBlocker will block ads from being loaded and tries to optimize the space.

Wi-Fi Sync allows you to sync your iPhone, iPod touch or iPad with iTunes – wirelessly. No USB cable required. The app has received universal praise from Wired Magazine, Engadget, Gizmodo and others. And it’s sold over 29,000 copies making it one of the most successful commercial jailbreak apps ever released. And now it’s on sale for $2.99!

Update: SBingner has a fix in testing for this problem. See his page here.

If you are experiencing battery drain after installing ultrasn0w on baseband 6.15, here is a note from sherif hashim on the issue:

On a very important side note, before anyone starts to complain about battery drainage issues after installing the new ultrasn0w on the 6.15.00 updated BB, the culprit here is not ultrasn0w, it’s the hacktivation process (activating the phone by pwnage tool or redsn0w rather than using an official carrier sim to do so) that u mostly did while jailbreaking.

The 4.1 and 4.2.1 ipsws unlike their old ancestors, seem to keep looking for valid push certificates all the time, either thru your wifi, or thru your cellular data network (which u only have after installing ultrasn0w and hence u accuse it) , this can be seen clearly if u have a cellular working data plan for 3g or edge and u watched the settings > general > usage > cellular network data (sent & received are continuously increasing even without using any internet traffics on the phone) , this will also render the phone going hot even in stand by mode and also very rapid battery drainage occurs plus consuming ur data if you were not on an unlimited plan.

So to resolve this, u either:

A) try to activate the phone using the official sim if u have it (even if the sim itself is old and not working) , or borrow it from a friend if it’s possible, by any means, try to have an access to one and use it

B) if A is not feasible, u can install SBsettings from featured cydia packages and turn wifi and data off when u r not using it (shuts down both 3g and edge) , till C is done

C) there is a very nice module being worked on by a trusted jailbreak app dev, namely @sbingner, which will resolve that issue for those having it, the details of which shouldn’t be disclosed until he finishes his awesome work, till then, either use A or B to resolve the issue if it exists for you

sorry for the long post and thanks for your attention

Yesterday, the dev team released their carrier unlock for iPhone 3g and 3gs devices. Many of you were waiting for this and assumed it was another exploit that would bring in a new carrier unlock.

Interestingly enough, it’s actually not. It turns out the ipad baseband hardware is the same hardware in 3g and 3gs devices. But the baseband is a higher number 6.x. Therefore, it seems that we can take the ipad baseband and install it on iphones then use the same unlock in ultrasn0w from last time. Unfortunately, this doesn’t work on iphone 4′s. Therefore, the unlock is for all iphone 3g, 3gs, and ipads running 3.2.2 or lower. iPhone 4 users, there’s no unlock available here nor will it be likely that one will be coming anytime soon.

Keep in mind, if your device is a 3gs new bootrom that a 4.2.1 firmware jailbroken will be tethered so you should not update to 4.2.1 due to this. However, 3g owners and 3gs with old bootrom need not worry about tethered jailbreak and are free to update.

The unlock can be installed directly from redsn0w or from pwnage if you are planning to make a new pwnage bundle.

. Make the Switcher complete! Brightness Switcher either replaces the Volume Slider in the Switcher with a Brightness Slider or adds a Brightness Slider. Apple added a Volume Slider to the Switcher in iOS 4.2. But your devices have already hardware volume buttons. So why not use the space for something more reasonable? That’s what [...]

Dev team released redsn0w 0.9.6b4 to jailbreak iOS 4.2.1 devices. Before you jump on the “update” bandwagon, let me warn you (for those that have not been reading my current posts). You may have a tethered jailbreak. I recommend not updating for anyone that falls into this situation:

1) iPhone 3g devices – no problems
2) iPhone 3gs devices – if you have newer bootrom, your jailbreak will be tethered. If you have older bootrom, you will not have tethered jailbreak.
3) iPhone 4 – tethered.
4) iPod 3/4 – tethered.
5) iPod 2 – MC model tethered, older model not tethered.
6) iPad – tethered.

Again, tethered means that after you jailbreak, you will have to rerun redsn0w every time you reboot.

Also, current redsn0w seems to have an issue uploading the payload. It took me about 20 tries. Eventually it worked. If the progress bar stops moving while “uploading payload” at all, it failed. Reset the iPhone, close redsn0w, and repeat.

Thanks to Semaphore (creator of tiny umbrella) for this information:

It seems that Apple has decided to put a baseband requirement on iOS. So at this point, if you are using Saurik’s server or tiny umbrella and trying to restore 4.2.1 on an iPhone 4, you will end up in recovery mode and tiny umbrella will not be able to pull you out of recovery. In this case, you will have to restore 4.1 again or you will have to restore 4.2.1 stock and be tether jailbroken. (Of course, I recommend 4.1 and not bothering with 4.2.1 at all). If you are an unlocker, this is a no brainer. Do not update to 4.2.1 even to test it at this point.

Edit: Redsn0w 0.96b4 is out and jailbreaks correctly 4.2.1. However, it is tethered on most new devices (read below). And refer to the jailbreak chart to see how your device fits in.

So 4.2.1 is out and you have all heard Geohot state that his limera1n exploit means you can jailbreak all devices forever. So why shouldn’t you update today?  This post will try to answer some common questions around this subject and try to explain why you should hold off.

First, jailbreaking is much more than finding an exploit and using it to get a Cydia icon. A proper jailbreak does a lot more. There are a series of kernel patches done to the device that make most jailbreak software work correctly. (Note that updated pwnage bundles by msftguy or such do not have these patches and key apps may not work).

Second, while limera1n and greenpois0n exploits may work, those tools will not. You will need them to be updated before they can be used to jailbreak your 4.2 device.

Third, the spirit portion of the 4.1 jailbreak used in limera1n and greenpois0n allowed the device to boot jailbroken untethered. That has been patched by Apple and no fix to that problem is known yet. Therefore, even if you do manage to get an updated limera1n or greenpois0n, your iphone 4, iphone 3gs on newer bootrom, ipod touch 3 or 4, or iPad will all be tethered. This means after you run the tool it will boot one time and work jailbroken until you reboot. At that time you will get a “connect to itunes” logo and will have to rerun the jailbreak tool in order to get the device to boot again.

Now, tethered jailbreak isnt the end of the world. On an ipod and ipad, it’s probably not too bad. But on an iPhone, a device you may need to make emergency calls on the road, it really sucks. I strongly suggest all iPhone users that have tether jailbreak devices only to hold off on updating until this is solved. Me, I’m staying on 4.1 probably until iOS 5.

Which devices are not tethered? iPhone 3g, iPhone 3gs (old bootrom), ipod touch 2 (non mc). On these devices, you will find a pwnage tool bundle or updated redsn0w released soon. Unfortunately, these updates will not have updated kernel patches and, on 4.2, this will be more problematic that in the past.

Finally, let’s say you get past all these issues somehow. You jailbreak to install software. Most of you want either themes or some cool tweaks like sbsettings, folder enhancer, or bitesms. All these rely on mobile substrate. As of this posting, mobile substrate does not work on 4.2. That means that almost all jailbroken software will not run on 4.2 as of today. This is being worked on and will certainly be fixed shortly. But that is the state as of today.

As a side note, there’s just nothing provided by Apple’s 4.2 update that you got to have today. Seriously. What is so great that it’s worth removing all the great things you get by jailbreaking? If you have some problem on your device, do not expect it to be solved in 4.2.1. Apple always lists “bug fixes” but really, we never see anything useful from this. Waiting a week, two, or three to let these issues all get sorted out is your best bet.

Yes, Apple is releasing it today. No you should not update to it.

For those that did not read that, DO NOT UPDATE TO 4.2.  Ok now that you’ve read it, wait for the jailbreak to be officially tested and released. Further, remember that jailbreak on 4.2 is likely tethered on newer devices, which means you have to rerun it every time you reboot your device.  This was covered here already. Dev team also covered this in more detail here.

4.2 is out. Most of you should hold off on the update for now. If you have some bug you are hoping is fixed by 4.2, it’s not.

Worse yet, while limera1n and greenpois0n allow for 4.2 to be jailbroken, in most cases this is a tethered jailbreak. That means if you have to reboot your device, it shows a “connect to itunes” logo until you run the jailbreak software again.  I suggest not updating until something changes and your device is in the untethered jailbreak list (once tools are out):

iphone3g - will run 4.2 untethered. Redsn0w or such will be updated
iphone 3gs – old bootrom will run 4.2 untethered if done via pwnage tool while updating from 4.1. Otherwise it will be tethered.
iPhone 4 – tethered
iPod 2g – 4.2 untethered.
ipod 3g and newer – tethered
iPad – tethered.

Tethered jailbreak isn’t that bad for ipads and ipods. But if something happens and your iphone reboots while you’re away from your computer, you cant use the device until you get home and run something on your computer again.  The community is working on a solution to this to either make the jailbreak untethered or at least semi-tethered. Semi-tethered means the device will at least reboot, but unjailbroken while on the road until you return to your computer.

4.2 is about to be out. It’s nothing great for any of us. But it means iTunes will be prompting for an update, which of course you should decline. But the worst part….

Due to traffic reasons, Cydia didnt present the ‘make my life easier’ dialog. So many of you do not have SHSH stored for 4.1 which means once apple releases 4.2, you will never be able to restore 4.1 again. It’s critical that you download tiny umbrella and request your 4.1 SHSH today, while 4.1 is still being signed. You may have only a few days left of this opportunity.

You can tell if you have an SHSH for 4.1 in cydia’s home screen at the very top (although this may not yet be enabled in Cydia for all devices). You should see something like:
SHSH: iOS 4.0, 4.0.1, 4.0.2, 4.1

If you do not see the above line and / or it does not include 4.1, make sure you get tiny umbrella and get your SHSH now.

Download it here

Consider this urgent!

Greenpois0n, Chronic dev’s jailbreak tool is out. You can download it for both windows and mac (mac download coming soon). This is an alternative to Geohot’s release of Limera1n. If you already used Geohot’s tool you do not need to do anything else. If you are not jailbroken yet, you can choose which to use.

If you are getting host unreachable errors while trying to install pay packages, these are caused by Cydiastore payment check and need to be addressed by Saurik. It is not something I can solve on my end and (most importantly) my repo is not down. You get an error message like “apt.thebigboss.org host unreachable”. But the issue is that the cydiastore check times out.

Currently, Saurik is out of town on a conference so this may not be solved for a couple days.