Playstation 4 System Software Update An error has occurred.(SU421186)

Manually update PS4 system software using a USB drive: https://www.playstation.com/enus/sup...

Reseat the PS4 hard drive: https://www.playstation.com/envn/sup...

How to reinstall the PS4 console system software: https://www.playstation.com/envn/sup...



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Western Digital 1TB 2.5" Playstation 4 Hard Drive (PS4) : https://amzn.to/3M3Dsgw

SAMSUNG 870 EVO SATA III SSD 1TB 2.5” Internal Solid State Drive: https://amzn.to/42UylVT



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