Seriously? Redsnow
iPhone 4 or 3GS?
For windows or Mac computer?
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)
If you're too tired to search and read now, I recommend you get some sleep rather than messing around with your phone in a lethargic state. We don't want you 'bricking' it now. So when you wake up, search for it yourself and then run the JB.
Here you go bro.
http://www.iclarified.com/entry/index.php?enid=14567