There’s a Strange pattern when the previous two exploits were released. A russian group dumped & released HZD & Need For Speed which required a higher FW at the time & within a few days newer exploits were released. So there’s either two different exploits that exist in private or the Russian groups exploit is patched in 5.55. Just my theory here.
FW 6.00 has been out for over a month and we haven't seen any 5.5+ games released yet, so I think this pattern is dead now.