buying verizon gs3 this weekend question about unlocking bootloader

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http://forum.xda-developers.com – Hey all. My early upgrade is this weekend so I'm going to but a gs3 but I must be able to root and unlock boot loader. Was looking at the unlock app https://play.google.com/store/apps/d...meff.ez.unlock And see that the recent reviews saying they are having issues unlocking boot loader since update from Verizon. Is the app broken now And or did they patch the phone so u cant unlock the boot loader? I don't amt to buy this phone then end up not being able to unlock the bootloader (I can't stand anything other than aosp) Lmk. Also how would I go about unlocking the boot loader (HowTos)