Authentic "UPD" releases are almost always accompanied by an .sfv file. This file verifies that the data has not been corrupted or tampered with. If the download does not include a checksum, it is likely not a legitimate "Update."
The Dual World of Glossmen NM23: From Self-Care to Sandbox Gaming glossmen nm23 upd
A genuine Glossmen NM23 UPD (assuming a 30-45 minute runtime) should be large. Authentic "UPD" releases are almost always accompanied by an