My PS4 pro 13.50 restarted so suddenly ?

Hi I was testing mansoor's new jb… And umm Letting you guys know I'm a noob at this stuff I did the DNS it came out with an error when I tested my internet (apparently it's normal?) but once I got on the website my PS4 suddenly shut down so logically I started panicking thinking it got bricked LOL, well now Its still working but I'm too much of a pussy to try it again, wonder if I could get some step by step help like I'm a 4 year old baby, thanks in advance !