Seems like it's a company trying to make you update your ps4. It isn't legit, (don't do it) the same thing happened all over the ps3 scene.
whenever there's a jailbreak there will always be fake downgrades. Don't believe nothing unless you see it on wololo.net or know 100%
Advertising
PSP 1000 6.60 PRO CFW + PANDORA BATTERY
PSVITA 3G/WIFI 3.18 CUSTOM BUBBLES! TN-V etc
PS2 SLIM FMCB
PS3 Slim 250GB E3 Flasher REBUG 4.46 Spoofed 4.66
PS4 500GB :p