ZIP archive of about 269 MB containing AndroidUtility version 164.00.6844, as stated in the name. Tools under this name are typically used by phone technicians for service tasks on Android devices such as reading information, flashing firmware or handling locks, depending on the build. No specific device is mentioned. Scan the archive before running it, check what chipsets and models this release supports, and keep a backup of the phone firmware and user data before any write operation.
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 @mrepairo. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.