Ok, I already have a Verizon Galaxy S3, rooted and unlocked. Now my father is looking at upgrading. Would I still be able to unlock the bootloader on his, or have they "upgraded" the newer ones to prevent it in any way? I vaguely remember the original unlock documents saying something like "don't do this if your bootloader is above version x". But don't know if Verizon actually did anything to prevent unlocking.