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How to Manage HP M277 Firmware Updates: Dealing with "m277z.7z"
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
: Right-click m277z.7z and select "Extract Here." This will usually reveal an .exe (for Windows) or .dmg (for Mac) installer, or a raw .ful firmware file. How to Manage HP M277 Firmware Updates: Dealing with "m277z
