PowerPoint file in Russian whose name translates as update instructions, 17.9 MB in .pptx format. The name does not say which device, firmware or software it refers to, so check the slides before following any steps. Guides like this normally show, with screenshots, how to apply a firmware or software update, and the order of steps matters when flashing equipment, since an interrupted update can leave a device unusable. Open it with PowerPoint, LibreOffice Impress or a compatible viewer.
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 @videocard_notebook_resistance. Enginerys does not host this file.