The PS4 could not update the system software using a USB storage device. Go to [Settings] > [System Software Update] to update your PS4.
If that’s not possible, follow these steps:
Insert the USB storage device into your PC/Mac USB, right click and select ‘Format’ to open the dialog box. Select FAT or exFAT from the drop down menu under ‘File system’.
Using a computer, create a folder named "PS4". Inside that folder, create another folder named "UPDATE". The update file (“PS4UPDATE.PUP”) must be stored in the “UPDATE” folder.If the error persists, the downloaded file may be corrupted, so delete the update file from your USB device and download it again.