Windows/Mac Jailbreak iPhone 4, iPhone 3GS, iPad, iTouch 2G/3G/4G on 4.2.1 [Untethered]

274 views · Published 6 February 2011 · 6:00 · Indexed 21 October 2026

Channel: JBTech17 · 2011 · Howto & Style

Watch on YouTube

http://greenpois0n.com

***This jailbreak DOES work on the iPhone 4 for VERIZON! [4.2.6]***

This Untethered Jailbreak works for iDevices running 4.2.1
Supported iDevices:
  - iPod Touch 2G [ALL BOOTROMS]
  - iPod Touch 3G
  - iPod Touch 4G
  - iPad 1G
  - iPhone 3Gs [ALL BOOTROMS]
  - iPhone 4 [AT&T/Verizon]

*** If you want to SIM Unlock, preserve your baseband using TinyUmbrella ***


[CHECK REQUIREMENTS BEFORE STARTING!!]
INSTRUCTIONS:
[1.] Plug iDevice to computer
[2.] Quit iTunes if it is open or opens up when iDevice is plugged in
[3.] Open Greenpois0n
[4.] Follow the on screen instructions
[5.] Device will boot with various different text on the screen
[6.] Device will then reboot normally
[7.] Open up the Loader app [green icon on the SpringBoard], and follow the instructions to install Cydia


***REQUIREMENTS***
- One of the support iDevices above
- You need to be running 4.2.1. [To check if your running 4.2.1, go on your iDevice, Settings, General, About, Scroll down to where it says "Version"]
- If iDevice is running an older iOS, upgrade to 4.2.1 first by using iTunes.
- Windows or Mac
- Working Internet connection


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