Here is a small comment from MuscleNerd about the upcoming iOS 4 jailbreak:

the next jailbreak from @comex is like first Spirit..all devices, all bootroms, latest FW, painless install
Sounds nice!
Here is a small comment from MuscleNerd about the upcoming iOS 4 jailbreak:

the next jailbreak from @comex is like first Spirit..all devices, all bootroms, latest FW, painless install
Sounds nice!

MuscleNerd, famous hacker from DevTeam, has announced via Twitter that an upcoming comex release will jailbreak all 4.0 devices. This will include latest iPhone 3GS, , new iPod Touch and iPad.
jailbreak for all devices at 4.0 is already handled by upcoming @comex release
so, good time for iphone4 unlock stuff
Comex is also well-known, he authored the 3.1.2 and 3.1.3 jailbreak called Spirit. He’s also recently demonstrated Frash, an upcoming release of Flash for the iPhone and iPad.
iH8Sn0w has successfully performed a tethered jailbreak for iPhone 3GS with new firmware iOS 4 and the new bootrom. Unfortunately this jailbreak requires users to have 3.1.2 SHSH blobs saved.
Alright… If anyone has their 3.1.2 SHSH blobs, NOT 3.1.3. Then I’ll see if I can produce a tool that will do this job…
Here is a video demo posted by AKinGdom1:
The utility will be available soon. Might be as soon as tomorrow.

DevTeam updated iOS 4 jailbreak utility redsn0w to version 0.9.5b5-5. That should fix any APN or MMS issues that users were seeing. It’s safe to re-run it on an already jailbroken iPhone without restoring. Just deselect “Install Cydia” if you do that.
Supported devices are still only iPhone3G and iPod Touch 2G (not MC)
You can download the latest version here.

DevTeam released update to their PwnageTool jailbreak utility. New version 4.01 supports iOS 4 jailbreak for iPhone 3GS (old bootrom), iPhone 3G and iPod Touch 2G (non-MC).
You can download the latest version here.
We recommend to read DevTeam instructions before you start.

DevTeam successfully jailbreaked new iOS 4. They updated jailbreak utility redsn0w to version 0.9.5b5-3. Supported devices are iPhone3G and iPod Touch 2G (not MC). New redsn0w is also able to hacktivate iOS 4.0 for iPhone3G.
You can download redsn0w 0.9.5b5-3 here:
For latest version we recommend to use our utilities page.


Good news from DevTeam. They just announced via twitter that unlock for firmwares 3.1.3 and 4.0 is ready:
RT @MuscleNerd: ultrasn0w tips: 1) Works for all basebands since 3.0 FW 2) Remember to disable 3G on T-Mobile USA
ultrasn0w 0.93 released! Cydia repo is repo666.ultrasn0w.com. Works with basebands 04.26.08 thru 05.13.04
This means, that all users with basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04 can use ultrasn0w 0.93.
There is no jailbreak for , so you need to wait a bit. Firmware 3.1.3 who need unlock can update ultrasn0w and use their iPhones with any carrier.

Hacker msftguy created unofficial PwnageTool which allows to upgrade to the pre-release of iOS 4.0 GM while keeping your jailbreak and old baseband.
This is not an official release by Devteam, so we recommend to wait for the final versions of both iOS 4.0 and PwnageTool.
For the advanced users who want to experiment here is a .
Msftguy also provided a video:
Apple recentrly released new version of iPhone OS 4. it is called iOS 4.0 GM. Here is an update from DevTeam about iOS 4 jailbreak:
For those who can legitimately activate to the iPhone3G 4.0GM seed, the “point to previous IPSW” redsn0w trick works and will jailbreak your 4.0GM. The “trick” is to point redsn0w at the 4.0beta4 IPSW instead of 4.0GM (do this after you’ve updated to 4.0GM and activated through the new iTunes 9.2 on your Mac). Since the carrier unlocks aren’t yet supported at 4.0, don’t do this if you use yellowsn0w/ultrasn0w/blacksn0w. Many JB apps are still pretty buggy in 4.0, so again this is mostly useful only for developers of those JB apps.
Note: If you’re experiencing MobileSafari crashes, double check that you’re running the version at the bottom of this page.
For those without legit iPhone3G 4.0GM seed access, please wait until the full public 4.0 release for updates to the jailbreak tools.
You can download redsn0w 0.9.5.b4 here.

Here are download links for the latest versions of software for iPhone, iPod Touch and iPad jailbreaking, activating and unlocking:
RedSn0w | Sn0wBreeze | PwnageTool | Absinthe |GreenPois0n | iReb | iBooty | iFaith | UltraSn0w | LimeRa1n | Spirit | BlackRa1n | BlackSn0w | PurpleRa1n
For iOS 4.0, iOS 4.0.1 and you can use
(tethered iOS 5.1.1, iOS 5.1 jailbreak for iPhone 3GS, , iPad 1, iPod Touch 3G, iPod Touch 4G; untethered iOS 5.0.1 jailbreak for all devices, including iPhone 4S, iPad 2; save unlock tickets)
(tethered iOS 5.1 jailbreak for iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G; untethered iOS 5.0.1 jailbreak for all devices, including iPhone 4S, iPad 2; save unlock tickets)
(tethered iOS 5.1 jailbreak for iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G; untethered iOS 5.0.1 jailbreak for all devices, including iPhone 4S, iPad 2)
(tethered iOS 5.1 jailbreak for iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G)
(untethered iOS 5.0.1 jailbreak for iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G)
(tethered iOS 5.0.1, iOS 5 and iOS 4.3.5 jailbreak for iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, iPod Touch 4G; untethered for iPhone 3GS with old bootrom; supports untethered iOS 4.3.3 jailbreak)
(tethered iOS 5.0.1, iOS 5 and iOS 4.3.5 jailbreak for iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, iPod Touch 4G; untethered for iPhone 3GS with old bootrom; supports untethered iOS 4.3.3 jailbreak)
(tethered iOS 5, iOS 4.3.5 jailbreak for iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, iPod Touch 4G; untethered for iPhone 3GS with old bootrom; supports untethered iOS 4.3.3 jailbreak)
(supports untethered iOS 4.3.3 jailbreak for iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, iPod Touch 4G)
(supports untethered iOS 4.3.3, tethered iOS 4.3.5, iOS 5 jailbreak for iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, iPod Touch 4G; untethered for iPhone 3GS with old bootrom)
(supports untethered iOS 5.0.1 jailbreak for iPhone 3GS, iPhone 4, Apple TV 2G, iPad, iPod Touch 3G, iPod Touch 4G)
(supports untethered iOS 4.3.3 jailbreak for iPhone 3GS, iPhone 4, Apple TV 2G, iPad, iPod Touch 3G, iPod Touch 4G)
(pwnagetool for windows, supports tethered jailbreak of iOS 5.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad; untethered for iPhone 3GS with old bootrom; untethered for iOS 5.0.1, iOS 4, iOS 3 supports Apple TV 2G)
(pwnagetool for windows, supports untethered jailbreak iOS 5.0.1, iOS 4, iOS 3 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad)
(pwnagetool for windows, supports iOS 5, iOS 5.0.1, tethered jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad, Apple TV 2G; untethered for iPhone 3GS with old bootrom)
(pwnagetool for windows, supports iOS 4.3.3, untethered jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad, Apple TV 2G)
(pwnagetool for windows, supports iOS 4.2.1, jailbreak for iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad)
(Windows tool that will put your device into a pwned state so that you can upload custom firmware to it)
(Utility to Boot Tethered iPhone 4, iPhone 3GS, iPad, iPod Touch 3G, iPod Touch 4G after Sn0wBreeze jailbreak)
iFaith 1.4.2 (Windows tool that will save SHSH keys for your current installed iOS)
(supports untethered iOS 5.0.1 jailbreak for iPad 2 and iOS 5/5.0.1 jailbreak for iPhone 4S)
(supports firmware 4.1 and 4.2.1 jailbreak for iPhone 4, iPhone 3GS, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad)
Current version is ultrasn0w 1.2.3, download in Cydia (unlock for iPhone 4, iPhone 3GS, iPhone 3G, firmwares 3.0-4.3.3; it supports basebands 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00)
(supports firmware 4.0-4.1, jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad)
(jailbreak for all devices – iPad, iPhone, iPod Touch, firmware 3.1.2, 3.1.3, or 3.2)
(jailbreak for all devices, firmware 3.1.2)
(unlock for iPhone 3G and iPhone 3GS, firmware 3.1, 3.1.2)
(Beta jailbreak for iPhone 3GS, firmware 3.0)
(Beta jailbreak for iPhone 3GS, firmware 3.0)
You can download older software versions .absinthe-mac-0.1.2-2.zip