Archive of EFT Pro version 3.7.0, a 65.8 MB RAR. The name identifies the program and version only, with no target device. EFT Pro is a service tool used by mobile phone technicians for tasks such as FRP and lock removal, flashing and repair on Android devices, and it normally requires a matching dongle and drivers. Check that the version suits your hardware and phone models before use, and scan any third-party package before running it, since unofficial tool archives can carry unwanted software.
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 @mobile_jump2. 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.