Update: 1.1.3 Unlock on installer

This is just an update to the post earlier this morning. You can now do the unlock via installer just add BigBosses repo (http://sleepers.net/iphone/repo.plist) to the list of sources and you`ll get an install item, with the Geohots Gunlock Script. Hope this makes things easier 

another update: Here is BigBosses mini tutorial