Sony’s official changelog succinctly notes that the update Beyond general stability adjustments, updates of this nature serve two critical purposes for a legacy console: PS3 - HFW 4.90.1 (Hybrid Firmware) - PSX-Place
Updated encryption keys for playing newer Blu-ray movies. ps3 system software update 490 upd download 2021
As with most late-stage legacy updates, the official changelog from Sony's official support page is famously brief: . Sony’s official changelog succinctly notes that the update