Chronic-Dev Team has released an updated version of GreenPois0n tool to jailbreak Verizon iPhone 4 on iOS 4.2.6. For those who don't know, just like AT&T's iPhone 4, Verizon iPhone 4 is still vulnerable to the Geohot's Limera1n bootrom exploit. The GreenPois0n tool by Chronic-Dev Team uses the same bootrom exploit plus some kernel based hack to make the jailbreak untethered.
For those who don't know, John Sibiga was the first person who jailbreaked iOS 4.2.6 on his Verizon iPhone 4 as he was lucky enough to get hold of the upcoming Verizon iPhone 4 even before its launch date. He tweeted the this picture of Cydia running on his Verizon iPhone 4 and further confirmed that he jailbreaked it using GreenPois0n RC5 tool.
The new version of GreenPois0n RC5 (B4) is available for both Windows and Mac users. We have already shared our step-by-step iOS 4.2.6 jailbreak guide here for the Verizon iPhone 4. However, if you want more detailed jailbreak guide, click here for Mac and click here for Windows jailbreak guide.
Update#1: Download GreenPois0n RC6 to jailbreak iOS 4.2.1 on Apple TV 2G
Update#2: Download official PwnageTool 4.2 for untethered iOS 4.2.1 jailbreak on Mac
Update#3: Download Sn0wbreeze 2.2 for untethered iOS 4.2.1 jailbreak on Windows