: In safe mode, select the "Update from USB Storage Device" option from the menu.
Re-download the firmware file to ensure it is not corrupted. If you'd like, I can:
The file must always be named exactly PS3UPDAT.PUP for the PS3 console to recognize it.
Inside any official or custom firmware package, the folder structure is:
Modified firmware, such as Kmeaw or Rebug, that allows for custom features, game backups, and homebrew applications.