If your console is connected to a stable network, this is the quickest method: How to update PS3 console system software - PlayStation
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⚠️ : Be cautious when downloading firmware from third-party sources. Some users reported encountering corrupted versions of 4.90 in the early days of release (with an MD5 of F8C0C15EBDA82E4347FBABF4A7CF53BC ) that caused soft-bricks or update failures. Always use the official PlayStation website to avoid such issues.
Download the official PS3 firmware (often named PS3UPDAT.PUP ) from a reputable source, such as PlayStation's official website or archival sites.
