A new firmware update for the PS4 is now available; it is firmware 9.00. However, many users are claiming that after installing it, the console began to exhibit numerous issues, such as frequent crashes and more.
Reddit users, on the other hand, say that the console is back up and running following the upgrade. However, the issue appears to be affecting a large number of users, with some reporting that they are unable to use programs such as Netflix. Others claim that the DualShock 4 is not compatible with the console, and so forth.
It is not suggested to download the latest version at this time, and it is preferable to wait for more information from Sony.