Bloodborne Cusa00900 ~upd~ May 2026

But not gone.

Fear the old firmware.

As recently as December 2024, a lone user on a Bloodborne Discord server posted a screenshot: “Just got CUSA00900. First time in two years. Happened right as the Moon Presence did that one-shot attack.” bloodborne cusa00900

“Welcome home, good hunter.” To this day, no official explanation has been issued for why the error clustered around the DLC’s most emotionally punishing bosses. But if you listen closely—past the whir of your PS4’s fan, past the login chime—some say you can still hear the faint sound of a tiny, corrupted save file refusing to let go.

“Failed to save game data. (CUSA00900)” But not gone

In other words, the game remembered you had progressed—but the console chose to forget.

But for Bloodborne hunters on the old PS4 firmware 9.00, CUSA00900 became something else entirely: a myth, a menace, and—depending on who you asked—a sign that the game itself was haunted. Let’s strip away the folklore for a moment. CUSA00900 is a region-specific title ID for the North American version of Bloodborne (the actual code is CUSA-00900 ). The error message usually appears when the PS4’s save-data auto-upload fails, often tied to corrupted system cache or a conflict with the console’s 9.00 firmware update—which, ironically, was supposed to improve stability. First time in two years

Instead, they simply wrote: