The “dlccodex” part of your keyword refers to the of X‑Plane 11, a popular cracked version that circulated in the flight‑sim community around 2017. The CODEX package was a complete “untouched” ISO image of the game, often bundled with the global scenery as a separate DLC.
: Official versions of X-Plane will auto-prompt for engine updates, but scenery updates are typically manual or triggered via the Steam client or standalone installer. Installation and Updates x plane 11 global scenery dlccodex upd