The latest version of system software was not recognised and the update failed. Please try the following according to the update method you are using:
To update via the Internet ・Restart your PlayStation®5, connect to the Internet using a wired connection if possible, and configure the network settings again.
・If using a wireless connection, review the installation location, bringing your PS5 closer to your router or removing anything interrupting the connection between the devices.
・Turn off your router and modem and wait at least 5 minutes, then restart it.
To update via a USB storage device Please download the latest version of the system software. Please make sure the file name and save location are correct.
To update with a game disc Ensure there are no fingerprints, smudges or scratches. If there is any dirt or fingerprints, clean the disc with a soft clean cloth, such as a glasses cleaning cloth, and wipe it from the centre to the edges.
If the above won't work, try other update methods if possible.