The .7z extension indicates it is a compressed archive created with 7-Zip. You will need a utility like 7-Zip or WinRAR to open it. Community Insights
As a "v1" release, the translation is functional and covers the main story, though users have occasionally noted minor syntax errors or unformatted text in specific sub-menus. vntNV1.7z
Because this is a community-distributed patch rather than an official update: vntNV1.7z
Technical reviews and user feedback from translation forums suggest the following: vntNV1.7z