The official source for PS3 firmware is the PlayStation Support page.
If you are encountering specific error codes during this process, please let me know. Tell me if you are updating an console, and whether you are using official firmware or custom firmware (CFW) so I can provide the exact technical fix. Share public link
Because 4.89 updated the PSN login requirements, you may encounter issues signing in after the update. You must create a from your PlayStation account management page on a web browser to log in. ps3 system software update 489 download link
Guide you on if it breaks after the update. Let me know which of these you need help with! Sony PlayStation 3 Firmware 4.93 Download - TechSpot
Yes. Installing any official Sony update will overwrite CFW and ban your console from PSN if you try to reinstall CFW after. If you have a jailbroken PS3, do not install this update. The official source for PS3 firmware is the
You can no longer create a new PlayStation Network account directly on the PS3 system. You must create an account via a web browser on a PC or mobile device.
Once your USB drive is configured, you can initiate the manual update process on your console. Step 1: Insert the USB Drive Share public link Because 4
This update deactivated account creation and certain account management features directly from the PS3 console.
Use this if your PS3 turns on and you just want to update via USB (Storage Media).