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Showing posts with label I PHONE 3G. Show all posts
Showing posts with label I PHONE 3G. Show all posts

Jailbreak 4.3.5 Firmware iPhone 4, 3Gs, iPod Touch 4, 3 & iPad


Steps:
1. Download 4.3.5 ipsw and install it to your device you can get it here.
2. Download Redsn0w with link in download section.
3. Start up Redsn0w and click browse and select your devices 4.3.4 firmware file. (found here)

4. Next just check Install Cydia and hit next.

5. Turn off device and plug into computer, hit next and follow instructions to dfu mode.

6. Once in dfu mode redsn0w will start to jailbreak automatically.
7. You are done! if you ever need to turn your iPhone back on after it has been off jailbreak installs will not work because it is tethered. Use Redsn0w and repeat steps 3-7 checking “just boot tethered” instead of “install cydia”.
Read More...

I PHONE -FULL PACK (ALL IN ONE)


iPhone 3GS Official Firmwares

v3.0.0 - Modem FW 04.26.08

v3.0.1 - Modem FW 04.26.08

v3.1.0 - Modem FW 05.11.07

v3.1.2 - Modem FW 05.11.07

v3.1.3 - Modem FW 05.12.01

iPhone 3G Official Firmwares

v2.0.0 - Modem FW 01.45.00

v2.0.1 - Modem FW 01.48.02

v2.0.2 - Modem FW 02.08.01

v2.1.0 - Modem FW 02.11.07

v2.2.0 - Modem FW 02.28.00

v2.2.1 - Modem FW 02.30.03

v3.0.0 - Modem FW 04.26.08

v3.0.1 - Modem FW 04.26.08

v3.1.0 - Modem FW 05.11.07

v3.1.2 - Modem FW 05.11.07

v3.1.3 - Modem FW 05.12.01


iPhone 2G Official Firmwares


v1.0.0 - Modem FW 03.11.02_G

v1.0.1 - Modem FW 03.12.08_G

v1.0.2 - Modem FW 03.14.08_G

v1.1.1 - Modem FW 04.01.13_G

v1.1.2 - Modem FW 04.02.13_G

v1.1.3 - Modem FW 04.03.13_G

v1.1.4 - Modem FW 04.04.05_G

v2.0.0 - Modem FW 04.05.04_G

v2.0.1 - Modem FW 04.05.04_G

v2.0.2 - Modem FW 04.05.04_G

v2.1.0 - Modem FW 04.05.04_G

v2.2.0 - Modem FW 04.05.04_G

v2.2.1 - Modem FW 04.05.04_G

v3.0.0 - Modem FW 04.05.04_G

v3.0.1 - Modem FW 04.05.04_G

v3.1.0 - Modem FW 04.05.04_G

v3.1.2 - Modem FW 04.05.04_G

v3.1.3 - Modem FW 04.05.04_G
************************************************** *

Download iPhone OS 3.1.2 Custom Firmware (IPSW Files) for iPhone 3GS, 3G, 2G

iPhone 3GS Custom IPSW
Activated (for UnOfficial Carrier Users)


iPhone2_1_3.1.2_7D11_Custom_Restore_Activated.001
iPhone2_1_3.1.2_7D11_Custom_Restore_Activated.002
iPhone2_1_3.1.2_7D11_Custom_Restore_Activated.003
iPhone2_1_3.1.2_7D11_Custom_Restore_Activated.004

iPhone 3G Custom IPSW
Activated (for UnOfficial Carrier Users)


iPhone1_2_3.1.2_7D11_Custom_Restore-Activated.001
iPhone1_2_3.1.2_7D11_Custom_Restore-Activated.002
iPhone1_2_3.1.2_7D11_Custom_Restore-Activated.003

iPhone 2G Custom IPSW
Activated (for UnOfficial Carrier Users)


iPhone1_1_3.1.2_7D11_Custom_Restore_Activated.001
iPhone1_1_3.1.2_7D11_Custom_Restore_Activated.002
iPhone1_1_3.1.2_7D11_Custom_Restore_Activated.003


Download iPhone OS 3.1.3 Custom Firmware (IPSW Files) for iPhone 3GS, 3G, 2G

iPhone 3GS Custom Firmware 3.1.3 IPSW
Activated (for UnOfficial Carrier Users)


iPhone2_1_3.1.3_7E18_Custom_Restore_Activated.zip. 001
iPhone2_1_3.1.3_7E18_Custom_Restore_Activated.zip. 002
iPhone2_1_3.1.3_7E18_Custom_Restore_Activated.zip. 003
iPhone2_1_3.1.3_7E18_Custom_Restore_Activated.zip. 004

iPhone 3G Custom Firmware 3.1.3 IPSW
Activated (for UnOfficial Carrier Users)

iPhone1_2_3.1.3_7E18_Custom_Restore_Activated.zip. 001
iPhone1_2_3.1.3_7E18_Custom_Restore_Activated.zip. 002
iPhone1_2_3.1.3_7E18_Custom_Restore_Activated.zip. 003

iPhone 2G Custom Firmware 3.1.3 IPSW
Activated (for UnOfficial Carrier Users)


iPhone1_1_3.1.3_7E18_Custom_Restore_Activated.zip. 001
iPhone1_1_3.1.3_7E18_Custom_Restore_Activated.zip. 002
iPhone1_1_3.1.3_7E18_Custom_Restore_Activated.zip. 003
************************************************** ********
Ipod Touch 1G Official Firmwares


Ipod Touch 1G (1.1/3A101a)

Ipod Touch 1G (1.1.1/3A110a)

Ipod Touch 1G (1.1.2/3B48b)

Ipod Touch 1G (1.1.3/4A93)

Ipod Touch 1G (1.1.4/4A102)

Ipod Touch 1G (1.1.5 /4B1)

Ipod Touch 1G (2.0/5A347)

Ipod Touch 1G (2.0.1 /5B108)

Ipod Touch 1G (2.0.2/5C1)

Ipod Touch 1G (2.1/5F137)

Ipod Touch 1G (2.2/5G77)

Ipod Touch 1G (2.2.1/5H11)

Ipod Touch 1G (3.0/7A341)

Ipod Touch 1G (3.1.2/7D11)

Ipod Touch 1G (3.1.3/7E18)



Ipod Touch 2G Official Firmwares




Ipod Touch 2G (2.1.1/5F138)

Ipod Touch 2G (2.2/5G77a)

Ipod Touch 2G (2.2.1/5H11a)

Ipod Touch 2G (3.0/7A341)

Ipod Touch 2G (3.1.2/7D11)

Ipod Touch 2G (3.1.3/7E18)

Ipod Touch 3G Official Firmwares



Ipod Touch 3G (3.1.1/7C145)


Ipod Touch 3G (3.1.2/7D11)


Ipod Touch 3G (3.1.3/7E18)
**************************************************
**************************************************
Softwares and Guides For Jailbreak


Iphone Dev Team Official Torrent



Redsn0w 0.9.3


Windows
Mac

Redsn0w 0.9.2

Windows
Mac

Guides For Redsn0w
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Windows)
How to Jailbreak Your iPhone 3G on OS 3.1.2 Using RedSn0w (Windows)
How to Unlock/Jailbreak Your iPhone 2G on OS 3.1.2 Using RedSn0w (Windows)


PwnageTool 3.15 For Mac Only
Mirror 1
Mirror 2
Mirror 3

Guides For PwnageTool

How to Jailbreak Your iPhone 3GS Using PwnageTool [Mac]
How to Jailbreak Your iPhone 3G Using PwnageTool (Mac)
How to Unlock/Jailbreak Your iPhone 2G PwnageTool (Mac)

Blacksn0w

Go to blackweather to download Latest Windows Or Mac Version

Guides For blacksn0w

How to Jailbreak and Unlock Your iPhone 3G, 3GS Using BlackSn0w [Windows]
How to Jailbreak and Unlock Your iPhone 3G, 3GS Using BlackSn0w [Mac]


Sn0wBreeze
Jailbreak the iPod Touch 1G, 2G and iPhone 2G, 3G, and 3G[S](old bootrom & non MC).

Download

Guides For Sn0wBreeze
How to Jailbreak Your iPhone With Sn0wBreeze

Baseband bootloaders
3.9
4.6

************************************************** ***********
Iphone Unlocking Guides And Softwares

How to Unlock the iPhone 3G, 3GS Using UltraSn0w
How to Unlock the iPhone 3G, 3GS Using BlackSn0w

Without WiFi Unlock

۩۞۩ Here working Unlocker IPhone 3G,3GS OS v3.1.2 without wifi 100% ۩۞۩

.:: Unlock iPhone 3G,3GS OS 3.0,3.0.1 without wifi (No Software required) ::.

3GS Always Recovery mode after reboot READ IT
.:: iPhone 3G,3GS Having 3.1.3 or Modem 05.12.01 ::.
.:: iPhone 3GS "device isn't eligible" error while trying to Restore ::.


************************************************** *


iTune All Versions
32 bit
64 bit

NET Framework Version 3.5

iREB
Bypass any errors while restoring to a custom IPSW in iTunes for: iPhone 2G, iPhone 3G, and iPod Touch 1G.


Windows
Mac (Coming Soon )

f0recast
Check if your device is unlockable or Tethered with just a simple USB connect!

WinScp
Iphone Browser
Iphone Explorer


۩۞۩๑ CYDER ۞ Cydia in PC >Ultrasn0w,Ssh,Appliactions,Games,Theme Install Without Wifi

.:: Crack Applications Patch for 3.0--3.1.3 without WIFI (No Software required) ::.

How to Put an iPhone Into DFU Mode

How to Find the Firmware and Baseband Version of Your iPhone

How to identify iphone 2G ,3G And 3GS

iphone and ipod touch disabled or to remove passcode w/o restoring to itunes

How to Put an iPhone Into Recovery Mode

How to Use Your iPhone as a USB Drive

How to Change Your iPhone Boot Logo Without Reinstalling

How to Make iPhone Applications Run in the Background

Native MMS iPhone 2G: Enable MMS on iPhone 2G OS 3.1.2

How to SSH into iPhone/iPod Touch using WinSCP (Windows)

How to Enable Video Editing on iPhone 3G or iPhone 2G

For Crack Application
***Iphone Appstore Applications ***(direct download WITH YOUTUBE REVIEW)

CRACKED iPhone AppStore apps [ONLY THIS THREAD]


Backup all Important Data from Apple iPhone: Step-by-step Manual

Connect your iPhone to your computer and sync normally

Use Iphone Browser

For SMS > Var/mobile/library/sms/sms.db
For Contacts Var/mobile/library/AddressBook/AddressBookImages.sqlitedb,AddressBook.sqlitedb
For Notes Var/mobile/library/notes/notes.db
For youtube bookmarks Var/mobile/library/youtube/bookmarls.plist

For Mxtube videos Var/mobile/Media/mxtube
For Cycorder Videos Var/mobile/Media/videos


Glossary

Firmware - The operating system on the device that can be changed through downloadable updates
Jailbreak - The process by which a device is modified to allow unsigned code to be run
Unlock - The removal of SIM restrictions on the modem, allowing the use of the phone on any carrier
Baseband - Software that loads either the baseband or operating system into memory before execution
Bootloader - Software that loads either the baseband or operating system into memory before execution
Recovery mode - A special mode in the device allowing firmware restoration; in this mode, the screen of the device shows a graphic
DFU mode - A special mode in the device that bypasses the loading of the operating system for recovery purposes; in this mode, the screen of the device is blank
Read More...

Jailbreak for iOS 4.3.1


iPhone Dev-Team Releases Untethered Jailbreak for iOS 4.3.1
The iPhone Dev-Team has released an untethered jailbreak for iOS 4.3.1. The jailbreak implements the untether developed by i0n1c.

The 4.3.1 untether exploit comes courtesy of Stefan Esser (@i0n1c on twitter), a security researcher based in Germany. Stefan has a long history of vulnerability research, and ironically his first contribution to the iPhone jailbreak community was improved security — last year he beat Apple to the punch and implemented ASLR for jailbroken iPhones with his "antid0te" framework. We're happy to see that Stefan then turned his iPhone attention over to an untethered jailbreak exploit!

Supported devices are the iPhone 4, iPhone 3GS, iPod touch 4G, iPod touch 3G, iPad 1 and Apple TV 2. The iPad 2 is not supported as of yet.

You can download either RedSn0w or PwnageTool to perform the jailbreak. Download links can be found here:
● RedSn0w (Windows, Mac)
● PwnageTool (Mac)

We will be posting more tutorials on how to perform the jailbreak momentarily.

Tutorials:
● iPhone 4 (Windows, Mac)
● iPhone 3GS (Mac)

IMPORTANT: Ultrasn0w users don't update yet! The iPhone Dev-Team still needs to release an update to ultrasn0w for the 4.3.1 firmware.

We need to first release an update to ultrasn0w that fixes some incompatibilities when FW 4.3.1 is used on the older basebands supported by ultrasn0w. And remember once we do fix ultrasn0w for 4.3.1 (we'll announce it here and on twitter), you must only get there via a custom IPSW from PwnageTool, Sn0wbreeze or xpwn! Don't ever try to restore or update to a stock IPSW, or you'll lose the unlock!
Read More...

RedSn0w 0.9.7 Win/Mac

Custom bootlogos for iPhone3G/iPhone3GS/iPod2G users (with qualifying bootroms)
an option that implements the “DFU” button in PwnageTool. This button (which you can use from Windows) lets you
prepare your device for a custom DFU. Even if you’re purely a Windows user, you can get a trusted friend to run PwnageTool over your IPSW to create a custom IPSW. You can now install that custom IPSW on your own Windows box, after you run this redsn0w version.

This latest redsn0w is available at:

To view links or images in this forum your post count must be 5 or greater. You currently have 1 posts.
To view links or images in this forum your post count must be 5 or greater. You currently have 1 posts.

For Windows users who have run redsn0w and chosen “Just enter pwned DFU mode right now”, your device is now completely vulnerable. Running iTunes and selecting a custom IPSW from PwnageTool (choose it by pressing Shift+Restore)….you’ve now convinced your device and iTunes to restore to a custom firmware. Congratulations!
If you are timid about software and running these programs…please just wait! Don’t jeopardize your carrier unlock for a firmware upgrade. Wait for even easier methods than this latest redsn0w release.

Unlock iPhone 4 iOS 4.0.1 & 4.0.2

There have already been two updates with Apple’s iOS – iOS 4.0.1 released last July, and iOS 4.0.2 released this August. With these two updates and with the fantastic features of the iPhone 4, is it still necessary for you to jailbreak or unlock your iPhones?
Before the advent of jailbreaking, people who buy iDevices accept that their device’s fate will be dictated by Apple as to apps that will be installed, which of the hardware functions can be exploited to their full potential, and which carrier can be used with your iPhone.
Jailbreaking Defined
People who are not open to the “exclusivity” idea found ways to free their phones. That’s when Jailbreaking came to be. Jailbreaking is a process that enables a device to run code, meaning programs or system modification that hasn't been sanctioned by Apple. A jailbroken iPhone for example, will allow its user to download many extensions and themes previously unavailable through the App Store via unofficial installers such as Cydia.
Jailbreaking became so popular that the Copyright Office legalized it last July allowing all iPhone users to gain full and better control of their phones, reiterating that: “When one jailbreaks a smartphone in order to make the operating system on that phone interoperable with an independently created application that has not been approved by the maker of the smartphone or the maker of its operating system, the modifications that are made purely for the purpose of such interoperability are fair uses.”Features of iOS 4.0.1 and 4.0.2
The iOS 4.0.1 software update didn’t offer new features. Its main purpose was to address the flaw on the number of bars displayed by the iPhone 4 as a consequence of the “deathgrip” problem.
Apple said that an incorrect formula was used and this resulted to an incorrect display of the iPhone’s true signal strength. Due to this flaw, users in low reception areas see more 4 or 5 signal bars when it should be less.

The iOS 4.0.2, on the other hand, was also released to address a security problem found on iOS 4.0 and 4.0.1 created by JailbreakMe, a web-based jailbreaking tool for iDevices that is downloaded into the iOS device through a PDF file. JailbreakMe attacks a hole in the iOS making your iDevices vulnerable to hacking and malware installation.
TheiOS 4.0.2 software update has now addressed and patched this vulnerability issue and has provided improvements to Multitasking and fast app switching. It also brought over 100 new features to the iPhone like folders, better mail, iBooks, Home screen wallpaper, and wireless keyboard support among others.

The iOS 4.0.2 works with iPhone 4, iPhone 3GS, and iPhone 3G although not all features are said to be compatible with all devices. Apple said multitasking is available only with iPhone 4 and iPhone 3GS.
Reasons for Jailbreaking and Unlocking
Now, going back to the question of whether or not it is still necessary to jailbreak or unlock your iPhones, many believed this is still a necessity.
Apple mentioned that the iPhone 3GS and 3G are not capable of handling the full features of iOS 4.0.2. Many jailbreakers believe this is not the case. iPhone users of these two models who have jailbroken their phones saw that their units responded quite well to multitasking and to running several apps.
Access to applications is also another reason for jailbreaking because there are far more apps available in Cydia for jailbreakers than through iTunes.
It is also necessary to unlock the iPhone so people who want to be free from AT&T can switch to other carriers like T-Mobile.
Jailbreaking and Unlocking Tools
There are several tools that have already been released for unlocking iDevices. But before you use any of these jailbreaking and unlocking tools, please note that if you need to jailbreak or unlock your iPhone, don’t upgrade it to version 4.0.2 because once your iPhone is upgraded and patched, JailbreakMe will no longer work for your phone.
JailbreakMe
This is a web-based jailbreaking tool that was tagged as the simplest jailbreaking tool ever that works for all iDevices. JailbreakMe is browser-based and requires no downloads. It could jailbreak iPhone 4 iOS 4 and 4.0.1, including the original iPhone and older iPhone models 3G and 3GS. The tool is so flexible that it could also jailbreak iPad and iPod touch.
JailbreakMe can be accessed by going to the Apple’s Safari App. The jailbreaking tool is then downloaded into the iOS device through a PDF file.
JailbreakMe can be accessed by going to the Apple’s Safari App. The jailbreaking tool is then downloaded into the iOS device through a PDF file. The method allegedly attacks a flaw in the iOS PDF viewer in order to gain access to the device.
Redsn0w 0.9.5
This jailbreaking tool released by the iPhone dev team is for jailbreaking iPhone 3G & iPod Touch 2G for 4.0 iOS. The same can be used to jailbreak iOS 4.0.1 and 4.0.2.
Ultrasn0w 1.0-1
This latest unlocking tool version has recently been released by the iPhone dev team. Ultrasn0w 1.0-1 can unlock iPhone units under different basebands namely:
1. iPhone 4 running iOS 4.0 / 4.0.1 with 01.59.00 baseband
2. iPhone 3G, 3GS with 04.26.08, 05.11.07, 05.12.01 or 05.13.04 baseband

Do not forget to backup your iPhone before jailbreaking or unlocking your phones just in case you would need to restore your phones later on. Jailbreaking your iPhone may also void its warranty.


Unlock iPhone 4 iOS 4.0.1 & 4.0.2
Jailbreak iphone 4 by jailbreak me
Unlock Iphone 4
complete instructions iphone unlock tips and tricks
How to Select an iPhone Unlock/Jailbreak
How to End Task or Force Quit an iPhone Application
How to Fix Push Notifications on 3.0 iPhone 2G
How to Capture iPhone 3GS iBEC and iBSS (Mac)
How to Capture iPhone 3GS iBEC and iBSS (Windows)
How to Put an iPhone Into DFU Mode
How to Jailbreak Your iPhone 3G on OS 3.0.x by RedSn0w (Windows)
How to Organize Your iPhone Apps Using Movement
How to Show Battery Percentage on Your iPhone
How to Use Voice Control on Your iPhone
How to Record Video With iPhone
How to Copy and Paste on the iPhone
How to Create iPhone Voice Memos
Read More...

Iphone 4.2.1 jailbreak windows, and Mac

IPhone Dev Team has released the redsn0w 0.9.6 b4 / beta 4 for Windows and Mac OS X users now jailbreak IOS 4.2.1 on all the devices. But there is  some devices ( mentioned below ), the redsn0w 0.9.6 b4 / beta 4 supports only tethered jailbreak. You could get redsn0w 0.9.6 b4 for iOS 4.2.1 jailbreak from the below links.

 In the following devices, redsn0w 0.9.6 b4 supports tethered jailbreak :

•iPhone 3GS New Bootrom
•iPhone 4
•iPod Touch 2G (MC Model)
•iPod Touch 3G
•iPod Touch 4G
•iPad

For the following devices, redsn0w 0.9.6 beta 4 support untethered jailbreak :

•iPhone 3G
•iPhone 3GS (Old Bootrom)
•iPod Touch 2G (Non MC Model)

Download Redsn0w 0.9.6 b4 for Windows from


Download Redsn0w 0.9.6 b4 for Mac OS X from
Read More...

Unlock Iphone 3G/3GS iOS 4.2.1 with Ultrasn0w 1.2

The iPhone Dev-Team has released the updated version of carrier unlocking tool called Ultrasn0w which can unlock the latest iOS 4.2.1 and 4.1 firmware on iPhone 3GS and 3G on basebands later than 05.13.04. Since iPhone 4 has different baseband OS, It’ll take a little while longer for the Dev Team to unlock it on the latest firmware.
Follow the instructions posted below to unlock your iPhone 3GS or 3G on iOS 4.2.1.
How to: Update iPhone 3GS & 3G to 06.15.00 Baseband for Unlock:
Step 1: Ultrasn0w 1.2 unlocking requires that your phone is jailbroken on 4.1 or 4.2.1 firmware with 06.15.00 baseband. Follow the complete guide posted here (with PwnageTool) or here (for Redsn0w) to update your iPhone 3GS or 3G baseband to 06.15.00 and jailbreak it on iOS 4.1 / 4.2.1.
How to: Unlock iPhone 3GS & 3G on iOS 4.2.1 / 4.1:
Step 2: Once you are done with the jailbreak, you can now unlock your iPhone on any baseband using Ultrasn0w 1.2 from Cydia. To do this:
Start “Cydia” on your iPhone.
Touch on “Manage” tab on the bottom.
Now touch on “Sources” as seen in the screenshot below:

Touch on “Edit” and then on “Add”. You will be prompted to enter a url source as seen in the screenshot below. Type “ultrasn0w.com” and touch on“Add Source” to add this repo if you haven’t already.

Cydia will now automatically update your sources by following a series of automated steps.
After installation is completed. Search for “ultrasn0w 1.2” in Cydia and install this application. This app will automatically unlock your iPhone so that you can use it with any carrier.

Step 3: Now simply restart your iPhone and voila! you should now have a fully unlocked iPhone 3GS or 3G, running iOS 4.2.1
Read More...

IOS 4.2.1 Unlock for Iphone 3Gs and 3G (update)

Redsn0w 0.9.6b5 has just been released which can jailbreak and update iPhone 3GS & 3G baseband to 06.15.00 so that it can be unlocked using the newly released Ultrasn0w 1.2.
The new redsn0w 0.9.6beta5 is out. It gives both and OSX users the ability to flash the iPad 06.15 baseband on iPhone3G or iPhone3GS. It fetches the baseband files directly from Apple for now (the only IPSW you ever point it at is the stock IPSW for the FW on your iPhone right now). There may be a long delay while it’s doing this (their servers are getting pounded right now)
If you do flash your baseband via redsn0w, please keep it plugged into USB the whole time. You don’t want your battery to die during the flash process!
WARNING:
YOU DO THIS AT YOUR OWN RISK! PLEASE UNDERSTAND THE CONSEQUENCES OF UPDATING TO 06.15.
There is no way to come back down from 06.15, and there’s no hiding the baseband version from Apple. You’ll be voiding your warranty in a very obvious way.
If some future baseband comes out with a critical fix, you won’t be able to update to it if it remains down in the 05.xx sequence (then again, you wouldn’t update to it if you wanted to keep your unlock anyway).
Starting with FW 4.2.1 if you have 06.15 on your iPhone you won’t ever be able to restore to stock firmware (it will fail). You’ll need to only restore to custom IPSWs (then again, if you’re unlocker you should already be doing that).
Also, like the previous version of Redsn0w:
This version of Redsn0w is based on Geohot’s Limera1n bootrom exploit which has already pwned all current iOS devices for life. The only problem is that it is a tethered jailbreak, which means you will have to boot it into a “jailbroken state” on every reboot. This so called tethered or semi-tethered jailbreak condition in Redsn0w 0.9.6b4 & b5 however only applies to the new devices like: iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC Model), iPod touch 3G and the iPod touch 4G. Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (Non-MC Model) can be jailbroken-untethered right now using this latest version of Redsn0w. So until and unless Comex of Spirit and JailbreakMe fame comes up with another untethered hack for iOS 4.2.1, the jailbreak we get for the newer devices will be tethered (or semi-tethered).
Note: This release of Redsn0w is mainly targeted for iPhone 3GS & 3G users on iOS 4.1 / 4.2.1 who rely on a carrier unlock. All iPhone 4, 3GS, iPad and iPod touch users who don’t rely on a carrier unlock should follow the instructions posted here to jailbreak their iOS device on iOS 4.2.1 using Redsn0w 0.9.6b4.
Follow the instructions posted below to update your iPhone 3GS or 3G to 06.15.00 baseband and jailbreak it on iOS 4.1 /4.2.1.
Step 1: Download iOS 4.2.1 for iPhone 3GS or 3G.
Step 2: Update/Restore to iOS 4.2.1 firmware using the IPSW file you just downloaded via iTunes 10.1.
Step 3: Start Redsn0w 0.9.6b5 and point it to iOS 4.2.1 firmware to proceed with the jailbreak.


Step 4: Now select “Install Cydia” & “Install iPad baseband” options and then click “Next” to continue. Redsn0w will now fetch the exploitable 06.15.00 baseband from 3.2.2 important
and will replace it the baseband in iOS 4.2.1 / 4.1.

Note: Install iPad baseband option is applicable to iPhone 3GS & 3G users only who rely on a carrier unlock.
Step 5: Now make sure your device is both OFF and PLUGGED IN to the computer before you click “Next”.

At this stage you will be presented with a screen where you will have to quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.

Step 6: Sit back and enjoy while Redsn0w will do all the rest for you. Once done, your iPhone or iPod touch will restart automatically and you will find it jailbroken on the latest iOS 4.2.1 firmware, with the unlockable 06.15.00 baseband.
For iPhone 4, 3GS (New Bootrom), iPod touch 4G / 3G / 2G, iPad ONLY:
Step 7: Now from here onwards, whenever you want to do anything related to jailbreak like SSHing into your device, or running Cydia, you must first run your device in the so called “jailbroken state” on every reboot by using “Just boot tethered right now” option in Redsn0w.

How to Unlock iPhone 3GS & 3G on iOS 4.2.1 / 4.1
Follow the complete step by step guide posted here to unlock your iPhone 3GS and 3G on 06.15.00 baseband, running iOS 4.2.1 or 4.1 with Ultrasn0w 1.2.
UPDATE: Video instructions for the above tutorial is embedded below:
Download Redsn0w 0.9.6b5 for Windows
Download Redsn0w 0.9.6b5 for Mac

iPhone 4
iPhone 3GS
iPhone 3G
iPad
iPod touch 2G
iPod touch 3G
iPod touch 4G
Download iTunes 10.1 for Windows and Mac
Read More...