If you did not download this from an (like ZTE Support), be extremely cautious:
Firmware files from unofficial sources can contain backdoors or malicious scripts. 18.1.1.0007-PVP.rar
This specific naming convention is frequently found in technical forums or support portals for: If you did not download this from an
Software used to configure and update optical network units. ⚠️ Security Warning 18.1.1.0007-PVP.rar