xda-developers: We now have access to an unsecure bootloader. This was leaked by an African-Canadian Sock Monkey.
Let me make this clear. If Samsung updates your device's bootloaders, using this tool could potentially brick your device. Once you apply this, never accept a factory update without first flashing the Odin Packages in the Original Post of this thread. As a general rule, you want to be the last guy to apply any Samsung update. Run custom.