Update Ps4 9.00 !link!

: Users gained the ability to view PlayStation 5 (PS5) trophies on their PS4 consoles, including within the player's profile and trophy lists.

The update downloads but fails to install. The fix: Your hard drive might be too full. The PS4 needs roughly 1GB of free space to unpack the update. Delete old game captures or unused apps. update ps4 9.00

Maria, now happily playing on a PS5, doesn’t think about 9.00 anymore. But her old PS4, still on that version in a closet somewhere, sits as a silent monument to a peculiar moment in console history—when a routine patch changed the USB port forever, and for a brief, beautiful moment, made the complex simple, and the simple, complex. : Users gained the ability to view PlayStation

As of today, you likely need to update to access PSN features. However, there is a vocal community of "jailbreak" users who intentionally stay on lower firmware. The PS4 needs roughly 1GB of free space to unpack the update

You tried to use a USB, but the PS4 keeps asking for the update over and over. The fix: You accidentally downloaded the "Reinstallation" file (for a new hard drive) instead of the "Update" file. Delete the file, re-download the correct version (approx 500MB), and try again.