There is no PS4 CFW yet for any retail PlayStation 4 console... if you are seeing one posted on other sites it's a fake sadly
The most there is at this time for retail PS4 consoles is a jailbreak exploit (not a custom firmware) for 1.76 and below, and a partial Dev Playground and File Browser for 3.55.
oh bummer i still have a ps4 on 3.55 i never updated a buddy told me it could be cfw'd guess i will just leave it at that and not update lol thanks for the info