Finally, Chronic Dev Team has just released the GreenPois0n RC5 for Mac which lets you jailbreak iOS 4.2.1 firmware on your iPhone 4, iPhone 3GS, iPod Touch 4G, iPod Touch 3G and iPad. Using GreenPois0n RC5, you don’t require you to have SHSH blobs of 4.2b3 saved on Cydia. Follow the below guide to jailbreak [...]