OK let me start by saying I never thought this would work out in my favor DON'T DO WHAT I DID HERE U WILL HAVE A HARD BRICKED PHONE LMAO. That being said let me tell you what I tried just cause I felt like having an extra paper weight I have a galaxy s4 i545 rooted on 5.0.1 OK so I thought why not try EZ unlocked that was designed for s3. OK I know bad idea well anyway I installed it hit the unlock button and to my surprise it I think it actually worked it said bootloader unlocked or something like that. I backed out of the app and everything appeared to be normal all apps working phone still worked at this point I was actually hopeful that by some doumb luck I had successfully unlocked the bootloader and still not really sure if I did or not cause then I turned phone off and tried to enter download mode to see if I could tell if bootloader was unlocked and this is where things go BAD. The phone turned off like always but then would not enter download mode or recovery mode or even turn on it won't charge it does nothing so I kinda believe the bootloader may have been unlocked but now I have no bootloader to load my operating system so phone does nothing again I kinda figured something bad was gonna happen just thought I would share my experience with everyone lmao.who knows maybe something good can come from it maybe someone can use this to actually unlock the bootloader on these phones anyway that's what I did and if nothing else maybe nobody else will try what I did. AND IF YOU DO JUST KNOW I WARNED YOU IT WILL HARD BRICK YOUR PHONE INTO NOTHING . I may try to get it J TAG but for now I have another s4 I'm using that is rooted on oc1 firmware so I'm good