The Dev-Team has announced a new hactivation method. The new method means “you get the full benefit of push applications, and your battery life increases substantially.” They have implemented the method into an updated redsn0w (links below). Check out what the Dev-Team has to say about this new hacivation method below.
Update #6: Developer @sbingner (author of TetherMe) has made some excellent progress devising a new hactivation method that kills two birds with one stone for all you ultrasn0w unlockers. His tool, “Subscriber Artificial Module (SAM)” tricks your iPhone and iTunes into creating legitimate activation tickets even though you’re unlocked with ultrasn0w. This means you get the full benefit of push applications, and your battery life increases substantially. If you’d like to try it out, check out http://www.bingner.com/SAM.html
To help make it easier to try out @sbingner’s tool, we’ve updated redsn0w to include a new “Deactivate” option for the 3G and 3GS. Use this option *after* you’ve installed SAM…it will remove the normal patches made to lockdownd and let SAM take over. (sbingner plans on making a button to do this within SAMPrefs too). Great work, @sbingner!