Apparently this was considered unacceptable by the raging masses of Android fanboys, who not only believe they are entitled to exploits for free, but are also under the delusion that $200 total is a lot of money in exchange for this kind of work. I’m disappointed in the response by the community, but I’m going to turn it into a positive thing.
The method is pretty straight forward and simple, even for the less confident of rooters. You will need to running a Windows-based PC for the moment, download the .zip file, plug-in the Droid 4, toss your device into debug mode and run the exploit file. Sounds pretty simple right? The over all process should take only a few minutes and you will expect to see a few reboots, so don’t be scared.
Pop on over to the Vulnfactory to make a charitable donation and pick up the exploit. No donation required, but it would be a nice thing to do.
Source: Vulnfactory via Androidcentral