Messed with system permissions and now phone isn't working
I was so stupid and now i'm shaking and on the verge of tears. I just got this new phone and decided today to root it - that was successful. I then decided to download adaway which didn't work so I went to system permission using a file explorer app and changed rwx-rwx-rwx to rw-rw-rw and now looking back that is so god damn dumb. My phone isn't working, everything is black and nothing is working. I can't breathe. Please help, how do I get it back to rwx-rwx-rwx?