Downloading Marvels.SpiderMan.Miles.Morales.Update.v3.617.1 from unauthorized sources violates copyright law in most jurisdictions (DMCA in the US, EUCD in Europe). Even if you own the base game, applying cracked updates is a gray area: it breaches the EULA, specifically sections on modification and reverse engineering.
In the underground scene, such numbering often indicates a (e.g., FitGirl, DODI, or ElAmigos) or a crackfix applied to an already modified executable. Alternatively, it could be an internal developer build that leaked or an emulator-specific update for PlayStation 4/5 backups running on PC emulators like ShadPS4 or Spine. Marvels.SpiderMan.Miles.Morales.Update.v3.617.1...