PS4 Kernel Bug Details by TheFloW, Fixed Between 5.05-6.20 OFW | PSXHAX - PSXHACKS
PS4 hack: Mathieulh states he has a 5.53 Kernel exploit - Wololo.net
PS4: Mathieulh shows he has a 5.55 kernel dump, taunts Sony - Wololo.net
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Ps4exploit on Twitter: "Release Kernel Exploit 5.55 or Higher Please. Community wait very long for new Kernel Exploit. #ps4exploit #ps4 #exploit # kernel #kernelexploit" / Twitter
5.55 - 6.20 fully exploit in private? Is this real? : r/ps4homebrew
PS4 5.05 Kernel Exploit Released As PS4 Jailbreak Gets Closer