If your console isn't connected to Wi-Fi, you can use a PC to download the update from the Official PlayStation Support Page . How to update PS3 console system software - PlayStation
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If you want to access the PlayStation Network (PSN) or use online features for your games, this update is required. How to Download and Install You can update your system using two primary methods: ps3 system software update 490 upd download 2021
If you ignore the update prompt in 2021 or later, the following will happen:
PS3 System Software Update 4.90: Is Your Legacy Console Ready? If your console isn't connected to Wi-Fi, you
: One of the most critical reasons for these late-stage updates is the renewal of encryption keys (AACS keys) required to play newer Blu-ray movie discs. Without these periodic updates, the PS3 would lose its ability to function as a Blu-ray player for new releases.
Compatibility and notes
As of , the latest system software is version 4.93 . Key Features of Recent Updates