Guys, everybody who doesn’t know what they are doing: before you even think about exploiting you console verify the source of the host or tools you are using.
Don’t follow YouTube tutorials or some random guy on Twitter, Instagram or Facebook.
Example of Trusted sources: gbatemp, Wololo
You can find an AIO thread for ps4 exploits here on gbatemp.
Try to gain some basic knowledge about exploits and how they work including the risks to prevent bricking your console.
If you’re still unsure, the first thing you want to do is to dump the NAND of your console multiple times (at least 2 times) and compare the dumps with total commander, if they don’t match create another one until you got 2 matching dumps to make sure your dump is OK.