JailbreakMe PS4 4.0x: PS4 4.0x WebKit RCE Exploit by Qwertyoruiopz! Posted on March 29, 2017 by Xordac Prime Following the PS4 Playground for Firmware 3.55 and PS4 3.55 File… JailbreakMe PS4 4.0x: PS4 4.0x WebKit RCE Exploit by Qwertyoruiopz! Source: PS4 News – JailbreakMe PS4 4.0x: PS4 4.0x WebKit RCE Exploit by Qwertyoruiopz!