This is the Title ID . "NPUB" signifies a North American digital release. This is crucial because updates and fixes for the European version (NPEB) will not work on this version.
To understand how to use these files, you first have to decode the shorthand: wwe2k16digital01npub31743dmfix upd
Allow the game to boot without a constant internet connection to Sony’s servers. Enable the game to run on RPCS3 (the PC PS3 emulator). This is the Title ID
This usually involves replacing the original EBOOT.BIN inside the game's USRDIR folder or installing a small "Fix PKG." This "signs" the game to work on your specific firmware. Performance on RPCS3 (Emulator) To understand how to use these files, you
The string looks like a jumbled mess of characters, but for enthusiasts of the PlayStation 3 homebrew and emulation scene, it is a very specific "coordinates" tag. It refers to a digital version of WWE 2K16 (NPUB31743), a specific "fix" file (dmfix), and an update (upd).
Fix "black screen" loops that occurred when the digital version tried to verify DLC that is no longer reachable. How to Apply the Update and Fix