This is a video tutorial on how to unlock your iphone 3g or 3gs on firmware 4.2.1 or 4.1 using redsn0w and ultrasn0w. The tutorial is easy but make sure to follow the steps carefully. Beware updating the baseband will void your warranty from apple so only unlock if its a must. this video is split in to two parts so make sure to click the annotation for the second part. Download redsn0w here: www.mediafire.com or here: blog.iphone-dev.org Download firmware here: www.felixbruns.de please comment rate and subscribe and thumbs up!!