PlayStation 3 System Software Update 4.90 (UPD) — released 2021 — is a stability and compatibility update that improves system reliability and ensures continued access to PlayStation Network services. This compact firmware refresh addresses minor bugs, enhances game and application compatibility, and optimizes network connectivity for downloading content and using online features. Ideal for users who want a smoother PS3 experience, the UPD 4.90 installer is safe to apply and recommended before installing new games or accessing PSN services.
1. Blu-ray Player Key Updates The most significant functional change was an update to the Blu-ray Disc player encryption keys. Blu-ray players require periodic updates to their "Host Revocation Lists" and "Content Revocation Lists" to play newer movie releases. Without this update, PS3 owners would eventually lose the ability to play newer Blu-ray movies due to AACS (Advanced Access Content System) expiration. ps3 system software update 490 upd download 2021
⚠️ Note: This update did not re-enable the ability to use credit cards directly on the PS3 Store (removed in late 2020). System Stability: It improves the overall stability of