Skyrim.special.edition.update.only.v1.5.73.0.rar -

them into your main Skyrim Special Edition installation directory (where SkyrimSE.exe is located).

If you use mods, you must use the version of SKSE64 that matches runtime . Skyrim.Special.Edition.Update.Only.v1.5.73.0.rar

If you accidentally update past this version, you may need a "Downgrade Patcher" to return to 1.5.73. them into your main Skyrim Special Edition installation