Twitter 上的Ask PlayStation UK:"The #PS4 9.00 System Software Update is also released today. You can download and install from this link: https://t.co/XgEYHBA3wH https://t.co/v71TCaBHAr" / Twitter
PS4 System Software Update 8.50 Now Available To Download - PlayStation Universe
PlayStation 4 system software - Wikipedia
Download Links Available for Sony's Latest PS4 Firmware – Version 1.76