Update 7.00 is broken. ERROR CODE SU-30625-6 despite me trying to install it via internet as well as through USB storage device also tried on SAFE Mode. SONY.... you gotta be kidding
How to Fix PS4 su-30625-6 (PS4 System Update Error) - YouTube
How to Fix PS4 Error Su-30625-6, SU-42481-9 [Update errors]