Yes, you read the title correctly. Thanks to elite, recognized XDA developer Adam Outler, the Verizon variant of the Samsung Galaxy S3 can now join the ranks of other SGS3′s with a fully unlocked bootloader. This is an amazing achievement for the entire community, allowing Verizon users to root their device, flash the unsecured bootloader, and opening the device for complete customization.
Before we get to the goods, please take Adam’s warnings and notes into consideration.
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.
Note to developers: This CASUAL package contains everything you need. A jar can be opened as a zip file. CASUAL format sticks all scripts in the /SCRIPTS/ folder. You can obtain all files needed from within this package, then repackage them into CWM format. In order to avoid a mass brick fest, please apply an assert to your CWM scripts to verify ro.build.version.incremental and do not allow updates past what has been tested. As of the time of this writing I535VRALG7B is safe.
The following insturctions are for Linux and Mac users only.
1. Download this JAR file and open it.
2. Connect your device via USB, select “Root with DebugFSRoot” and “Do It.”
3. Select “Flash Unsecure Aboot” and “Do It.”
4. Use Odin or ClockworkMod to flash custom kernels to your SGS3.
If you’re a Windows user, you can try downloading Ubuntu and booting the LIVE CD. (Note, I have not tested this method.)
If you experience problems or have questions, head on over to the official discussion thread. Good luck!