iOS 4.1 which has been Released two days
ago and was jailbroken on iPhone 3G and iPod Touch 2G using Redsn0w, Now
it's Jailbroken also on iPhone 3GS by the well known tool Sn0wbreeze.
iH8sn0w today updated his tool to Sn0wbreeze V1.8 and enable you to
Jailbreak iOS 4.1 on iPhone 3G/3GS and iPod Touch 2G (Non-MC Model)..



Note: Your device must be jailbroken on
iOS 4 or iOS 4.0.1, Don't Ignore this or your Device will be damaged.

To Jailbreak iOS 4.1 using Sn0wbreeze, Just download Sn0wbreeze
V1.8 and iOS 4.1 Firmware (Developers only) then follow the step by step
guide posted here replacing iOS 4 with iOS 4.1 and Sn0wbreeze 1.6 with
Sn0wbreeze 1.8.

After Jailbreaking You will be able to Unlock
using Ultrasn0w 0.93 as iOS 4.1 don't Upgrade the Baseband, So follow
the guide posted here to Unlock your iPhone 3G / 3GS.

Download
sn0wbreeze-V1.8-BETA1.exe
for Windows
Download .Net Framework http://download.microsoft.com/downlo...a/dotnetfx.exe
[Required for Sn0wbreeze to work]
Download Download iTunes 9.2 for Windows and Mac OS X -
Ultrasn0w
Download iOS 4.1 http://www.ultrasn0w.ca/2010/07/appl...lopers.html%22