PS Dev Wiki guru Roxanne has posted information on how to obtain extra system information on the PS4 via Twitter:
The menu can be achieved by doing the following:
L1 + L3 + Triangle = 7 Seconds ! D-Pad up button + Options
A similar menu is also obtainable on the PS3.
The credit to the discovery goes to JerichoCFW according to the tweet, you can view the tweet and follow Roxanne here, seriously if you aren’t following her by now, you are an idiot O.o
View The Thread Here https://playstationhax.xyz/forums/topic/4031-how-to-get-extra-system-information-on-ps4/