Redsnow 0.9.6b6 -

If you are searching for today, you are likely on a nostalgia trip or a repair mission. Just remember: you will need an old computer, an A4 device on iOS 4.2.1, and a lot of patience. But when you see that pineapple logo appear on the iPhone 4’s Retina display for the first time, you will understand why this awkwardly named beta became a legend.

Offers an untethered jailbreak for the iPhone 3G and older iPod touch 2G models on iOS 4.2.1. redsnow 0.9.6b6

Check the box for "Install Cydia." You could also check "Enable battery percentage" (a fun tweak for iPhone 3GS users) or "Custom boot logo." Do NOT check "Deactivate" unless you know what you are doing. If you are searching for today, you are

It addresses battery drain issues experienced by users who updated their baseband to 06.15.00. Supported Devices and Firmware Offers an untethered jailbreak for the iPhone 3G