Jailbreak iPhone 4.2.1 for iPhone 4 & iPhone 3GS (Windows & Mac)

How to Jailbreak iPhone 4 & iPhone 3GS with iOS Version 4.2.1 Using Greenpois0n

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

To jailbreak other iPhone versions, see my in-depth iPhone Jailbreak instructions to find the right directions.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Greenpois0n.

Windows & Mac Users

Required:

  1. iPhone 4 or iPhone 3GS
  2. Firmware: 4.2.1 (check your version in Settings » General » About)
  3. Download Greenpois0n RC5 b2 (Windows or Mac)

Jailbreak Instructions

1. With your iPhone plugged in via USB and iTunes off, open Greenpois0n.

2. Click Jailbreak and follow the on-screen instructions to put your iPhone in DFU mode.

3. Once the Jailbreak is finished, your iPhone will reboot. Open the new “Loader” app on your screen.

4. Then touch Cydia to install it.

5. If you would like to remove the Loader app, open Loader, go to Options and touch Remove Loader app.

Was your jailbreak successful? Please post questions and suggestions in the comments.

Jailbreak iPhone 4.2.6 for Verizon iPhone 4 (Windows & Mac)

How to Jailbreak Verizon iPhone 4 with iOS Version 4.3.6 Using Greenpois0n

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

If you have another iPhone version, see my comprehensive guide to iPhone Jailbreak.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Greenpois0n.

Windows & Mac Users

Required:

  1. Verizon iPhone 4
  2. Firmware: 4.2.6 (check your version in Settings » General » About)
  3. iTunes 10.4
  4. Download Greenpois0n RC5 b4 (Windows or Mac)

Jailbreak Instructions

1. With your iPhone plugged in via USB and iTunes off, open Greenpois0n.

2. Click Jailbreak and follow the on-screen instructions to put your iPhone in DFU mode.

3. Once the Jailbreak is finished, your iPhone will reboot. Open the new “Loader” app on your screen.

4. Then touch Cydia to install it.

5. If you would like to remove the Loader app, open Loader, go to Options and touch Remove Loader app.

Was your jailbreak successful? Please post questions and suggestions in the comments.

Jailbreak iPhone 4.2.7 for Verizon iPhone 4 (Windows & Mac)

How to Jailbreak Verizon iPhone with iOS version 4.2.7 Using Sn0wbreeze or Redsn0w

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

To jailbreak other versions, visit my comprehensive guide for all you need to know about jailbreaking iPhone.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Sn0wbreeze or Redsn0w.

Windows Users

Required:

  1. Verizon iPhone 4
  2. Firmware: 4.2.7 (check your version in Settings » General » About)
  3. iTunes 10.2.2
  4. Download iOS 4.2.7 IPSW (iPhone 4 (Verizon))
  5. Download Sn0wbreeze 2.6.1

Jailbreak Instructions

1. Open Sn0wbreeze and click Next.

2. Browse to the 4.2.7 IPSW software that you previously downloaded.

3. Once the IPSW is verified, click Next.

4. Click Expert Mode.

5. Click Build IPSW.

6. Once you get the “Done!” screen, click OK.

7. Follow the on-screen instructions to put your iPhone in DFU mode.

8. Finally, open iTunes and click your iPhone device name in the left sidebar. Hold down Shift plus click the Restore button on the screen. You should now have a jailbroken iPhone.

Mac Users

Required:

  1. Verizon iPhone 4
  2. Firmware: 4.2.7 (check your version in Settings » General » About)
  3. iTunes 10.2.2
  4. Download iOS 4.2.6 IPSW (iPhone 4 (Verizon))
  5. Download Redsn0w 0.9.6 rc14 (Mac)

Jailbreak Instructions

1. Open Redsn0w, click Browse and select the iOS 4.2.6 file that you previously downloaded.

2. Click Install Cydia and hit Next.

3. With your iPhone off and the USB cable plugged in, click Next.

4. Follow the on-screen instructions to put your iPhone in DFU mode. Your iPhone will restart and be fully jailbroken.

5. Note: This is a tethered jailbreak, meaning you will have to redo the jailbreak each time that you reboot your iPhone. To untether this jailbreak, follow Step #6.

6. Open Cydia and go to Manage > Sources > Edit > Add > Type “http://cydia.pushfix.info” > Touch Add. Search for “Verizon Untether for 4.2.7” and Install. Your iPhone should now be fully jailbroken.

Was your jailbreak successful? Please post questions and suggestions in the comments.

Jailbreak iPhone 4.2.10 for Verizon iPhone 4 (Windows & Mac)

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

How to Jailbreak Verizon iPhone with iOS Version 4.2.10 Using Redsn0w.

Update Aug. 15, 2011: Many commenters have noted issues with this jailbreak. Please be patient as we attempt to diagnose the problem.

Note: To jailbreak another iPhone version, visit my comprehensive article on how to jailbreak an iPhone.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Redsn0w.

Warning: This is a tethered jailbreak, which means that you will need to redo the jailbreak each time your iPhone reboots (you will not lose your data each time.)

Windows & Mac Users

Required:

  1. Verizon iPhone 4
  2. Firmware: 4.2.10 (check your version in Settings » General » About)
  3. iTunes 10.4
  4. Download iOS 4.2.9 IPSW (iPhone 4 (Verizon)) — Update: Windows users must rename the .zip file to .ipsw in order for it to work.
  5. Download Redsn0w 0.9.8b4 (Windows or Mac)

Jailbreak Instructions

1. Open Redsn0w, click Browse and select the iOS 4.2.9 file that you previously downloaded.

2. Click Install Cydia and hit Next.

3. With your iPhone off and the USB cable plugged in, click Next.

4. Follow the on-screen instructions to put your iPhone in DFU mode. Your iPhone will restart and be fully jailbroken.

5. Note: This is a tethered jailbreak, meaning you will have to redo the jailbreak each time that you reboot your iPhone. To do so, simply click the “Just Boot Tethered Right Now” option in Redsn0w.

Was your jailbreak successful? Please post questions and suggestions in the comments.

Jailbreak iPhone 4.2.9 for Verizon iPhone 4 (Windows & Mac)

How to Jailbreak Verizon iPhone with iOS Version 4.2.9 Using Redsn0w.

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

To jailbreak any other iPhone version, visit my complete iPhone Jailbreak instructions.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Redsn0w.

Warning: This is a tethered jailbreak, which means that you will need to redo the jailbreak each time your iPhone reboots (you will not lose your data each time.)

Windows & Mac Users

Required:

  1. Verizon iPhone 4
  2. Firmware: 4.2.9 (check your version in Settings » General » About)
  3. iTunes 10.4
  4. Download iOS 4.2.9 IPSW (iPhone 4 (Verizon))
  5. Download Redsn0w 0.9.8b4 (Windows or Mac)

Jailbreak Instructions

1. Open Redsn0w, click Browse and select the iOS 4.2.9 file that you previously downloaded.

2. Click Install Cydia and hit Next.

3. With your iPhone off and the USB cable plugged in, click Next.

4. Follow the on-screen instructions to put your iPhone in DFU mode. Your iPhone will restart and be fully jailbroken.

5. Note: This is a tethered jailbreak, meaning you will have to redo the jailbreak each time that you reboot your iPhone. To do so, simply click the “Just Boot Tethered Right Now” option in Redsn0w.

Was your jailbreak successful? Please post questions and suggestions in the comments.

Jailbreak iPhone 4.3 for iPhone 4 & iPhone 3GS (Windows & Mac)

How to Jailbreak iPhone 4, iPhone 3GS with iOS Version 4.3 Using Sn0wbreeze & Pwnage Tool.

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

For instructions on jailbreaking another version of iPhone, visit my comprehensive guide to jailbreaking iPhone.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Sn0wbreeze (Windows) and Pwnage Tool (Mac). This is an untethered jailbreak.

Windows Users

Required:

  1. iPhone 4 or iPhone 3GS
  2. Firmware: 4.3 (check your version in Settings » General » About)
  3. iTunes 10.2.1
  4. Download iOS 4.3.1 IPSW (iPhone 4 or iPhone 3GS)
  5. Download Sn0wbreeze

Jailbreak Instructions

1. Open Sn0wbreeze and click Next until you get to the IPSW Selection.

2. Find and select the 4.3.1 IPSW file and allow Sn0wbreeze to verify it.

3. Click Next, then click Expert Mode.

4. Click Next, then click Build IPSW.

5. Sn0wbreeze will prepare a custom firmware and add it to your desktop.

6. Once the process is Done, click OK. Follow the instructions to put iPhone in DFU mode.

7. After this is done, connect your iPhone to your computer and click Shift + Restore within the iPhone area in iTunes.

8. Select the iOS 4.3.1 firmware that was placed on your desktop earlier. Once the installation is finished, your iPhone should be fully jailbroken.

Mac Users

Required:

  1. iPhone 4 or iPhone 3GS
  2. Firmware: 4.3 (check your version in Settings » General » About)
  3. iTunes 10.2.1
  4. Download iOS 4.3.1 IPSW (iPhone 4 or iPhone 3GS)
  5. Pwnage Tool 4.3

Jailbreak Instructions:

1. Open PwnageTool and click Ok.

2. Click Expert Mode.

3. Select your iPhone model and click Next.

4. Find and select the iOS 4.3.1 IPSW file that you downloaded earlier.

5. Click Build and Pwnage Tool will build a custom firmware, which should be saved to your desktop.

6. Next, enter the username and password of your system.

7. Follow the instructions to put your iPhone into DFU mode.

8. Open iTunes.

9. On the iPhone screen within iTunes, press option (on your keyboard) + Restore (button on the screen).

10. Now browse to the IPSW file that was placed on your desktop in Step 5. Select it. iTunes will work its magic and your iPhone should be fully jailbroken.

Was your jailbreak successful? Please post questions and suggestions in the comments.