I found a link to install TWRP recovery onto my phone but first I have to unlock my bootloader. I bricked 2 identical phones in the past using EZ Unlock to unlock the bootloader. Both times as soon as I rebooted my phone...they never worked again. My question is how do I safely unlock my bootloader without this happening again? I also want to know once my bootloader is unlocked, and TWRP recovery is safely on my phone, will I then be able to freely install custom roms? Or will I still need to install safestrap and safestrap compatible roms or touchwiz roms only?