What's the better untethered JB for Iphone 4, 4.2.1?

[rivest]

greenpo1son or redsn0w?

 

[AlphaDogg]

greenpo1son or redsn0w?

redsn0w is not untethered for 4.2.1, so I would have to say greenpois0n.

 

[Applejuiced]

Pwnage tool.

 

[dr bishop]

if you need to unlock, sn0wbreeze is the best solution otherwise it's greenpois0n.

 

[kuebby]

I like greenpois0n but it was the only one I tried. It was really easy to use and worked on all 3 devices I JB'd.

 

[rans0m00]

Did pwnagetool and it went flawless so I would recommend it.

 

[rivest]

i went with greenpois0n and I was glad I did. quick and fuss free.