Since "UPD" could mean you are looking for an on the project's progress, or simply my verdict on the current state of N64 emulation in WebAssembly, here is a breakdown review.
If you are looking for the specific :
Enable over‑the‑air (OTA) or on‑device patching of Nintendo 64 game ROMs and emulator logic via portable WebAssembly (WASM) modules. Target use cases: n64 wasm upd
: Modify the romlist.js file to include the names and paths of your new ROMs so they appear in the browser's selection menu. Since "UPD" could mean you are looking for