[Q] Making Verizon galaxy s5 linux permissive topic

Forgive me for asking this question here, as I have seen it in other areas of this site. I'll delete this if you want me to.

I've been looking everywhere on how to change my Verizon s5 to se linux permissive, for use with my app radio. Does anybody know how it's done? The only root I've found so far is for sprint.

Towelroot didn't work even with the app SELinuxModeChanger and su superuser.

Thanks in advance. I'm a newbie here, and have trouble following some of these threads.