18.1.1.0007-pvp.rar

If you did not download this from an (like ZTE Support), be extremely cautious:

18.1.1.0007 typically refers to a specific build or maintenance release of software. 18.1.1.0007-PVP.rar

In networking firmware, "PVP" often stands for Public Version or a specific Patch package. If you did not download this from an

The .rar extension indicates a compressed archive that requires software like WinRAR or 7-Zip to open. Common Contexts 18.1.1.0007-PVP.rar

Installing the wrong version for your hardware can permanently disable the device.