Greenpois0n RC5, the untethered jailbreak for iOS 4.2.1 firmware is out now. You can download Greenpois0n RC5 from the link below. As the exploit has been patched in iOS 4.3, so the Chronic Dev Team went ahead and released the untethered iOS 4.2.1 jailbreak before iOS 4.3 goes live.
Greenpois0n RC5 can jailbreak iOS 4.2.1 untethered on the following devices: iPhone 4, iPhone 3GS, iPod Touch 4G, iPod Touch 3G, 2G & Apple TV 2. There’s no need of SHSH blobs saved.
Download Greenpois0n RC5
Greenpois0n RC5 is available for Mac OS X and Windows.
Do NOT use Greenpois0n RC4
- Download Greenpois0n [All versions]
- Download Greenpois0n RC5-b3 for Mac [Mirror 1] [Mirror 2]
- Download Greenpois0n RC5_b2 for Windows [Mirror 1] [Mirror 2]
- Download Greenpois0n RC5 [Mirror 1] [Mirror 2]
- Download iOS 4.2.1
- Download iTunes 10.1.2
Detailed step-by step guide will be posted shortly is here:
- How to: Jailbreak iPhone 4, 3GS iOS 4.2.1 Untethered with GreenPois0n RC5
- How to: Jailbreak iPod Touch 4G, 3G, 2G iOS 4.2.1 Untethered with Greenpois0n RC5
- How to: Jailbreak iPad iOS 4.2.1 Untethered with Greenpois0n RC5
- How to: Update iPhone 4 to iOS 4.2.1 + Preserve Baseband 01.59.00
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