Archive of 32.5 MB whose name indicates the FlexBV boardview program bundled with a crack. FlexBV is a commercial viewer that opens many layout formats, including BRD, BVR, CAD, TVW and others, for locating parts and following nets. Unofficial cracked builds are a common route for malware, so scan the contents and run them in an isolated environment, or prefer the licensed release from the developer. The name gives no version number, so it cannot be told which formats this build supports.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.