Logitech Harmony firmware upgrade file
File type: Various data file
A .ezup file is a firmware upgrade file for a Logitech Harmony universal remote control.
It is used by Logitech Harmony setup software when updating compatible Harmony devices.
File type category:
Various data file
Date updated: October 2, 2026
The EZUP file extension belongs to the Harmony range of universal remote controls from Logitech. An EZUP file contains firmware upgrade data intended to update the software stored on a compatible remote.
The file is part of the Harmony update process rather than a user document or settings file. Logitech Harmony software handles the file and transfers the upgrade to the remote control.
Harmony software was provided for Windows and macOS. Logitech discontinued production of Harmony hardware, so EZUP files are mainly associated with existing devices and legacy update workflows.
An EZUP file is not designed to be opened or edited manually. Use compatible Logitech Harmony setup software on Windows or macOS and follow its device-update process; the software should select and install the firmware on the connected remote.
EZUP files cannot be meaningfully converted to another file format. They contain firmware upgrade data for Logitech Harmony devices and should be used through compatible Harmony software rather than exported or edited.
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