Huawei G525-U00 service archive in RAR format, 4.26 MB, identifying the model and its U00 variant suffix but nothing about the included files. Likely contents are a schematic or maintenance manual, which is typical for packages of this kind. These documents let you trace the power management circuit, find test points for charging and display, and work through no-boot faults. Since Huawei suffixes mark different market and radio versions, confirm your unit is the U00 variant before following the RF section.
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 @tamirat_moobile. 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.