Installer for Miracle Thunder version 2.82, a mobile servicing software suite, packed in a 712 MB RAR archive. Tools of this type are used by phone technicians for flashing firmware, reading device information and performing repair operations over USB on supported chipsets. Extract the setup and run it on a Windows PC; antivirus programs sometimes flag servicing utilities, so scan the files and only run them in an environment you trust. Drivers for the target phone usually have to be installed separately.
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 @esquemaseletricos. 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.