[How to] Jailbreak and Unlock iPhone 3G/IPT2G on iOS 4.1 beta

That is good news for my future iDevice for this update of iOS in 4.1
The current version of the jailbreak Redsn0w allows the beta version of this iOS 4.1 according MuscleNerd, a member of the Dev Team.

•  For users testing the beta 1 iOS 4.1 (restricted to dev)
•  For models iPhone 3G and iPod Touch (not MC)
•  Use this guide.
•  Just tell Redsn0w firmware iOS 4.0 instead of iOS 4.1 beta 1 The firmware.

iPhone 3G baseband version remains unchanged, therefore Ultrasn0w compatible for unlocked.
Redsn0w allows you to activate (Hacktivism) your iPhone.
iPod touch 2G model MC (Settings-Information) is not compatible with this jailbreak iOS 4.1 beta 1.