M277z.7z 〈Authentic ●〉
Whenever you download firmware from a third-party site or forum, be cautious. Ensure you are getting your files from a reputable source, as unofficial archive files can sometimes be used to distribute malware. For the safest experience, always try to find the official software on the HP Support site first.
Because Windows and macOS do not natively support the 7z format as deeply as they do .zip, you will need a third-party tool to access the contents: m277z.7z
The extension indicates that the file is a highly compressed archive. In the context of HP printers, "m277z" usually denotes the specific model line. Manufacturers and IT admins often use this format because it offers better compression than standard ZIP files, making the download faster. How to Open and Use the File Whenever you download firmware from a third-party site