Up.7z Here

Because it is not a native file format for older operating systems, you generally need third-party software to open it, though modern systems have added built-in support. 🪟 On Windows

A file ending in is a compressed archive created using the 7-Zip open-source software. Because it is not a native file format

: When creating or extracting the file, the software can use multiple cores of your computer's CPU simultaneously to get the job done faster. Because it is not a native file format