MTZ Editor lets you open, unpack, and modify third-party theme files on Xiaomi, Redmi, and POCO devices. It works on phones running MIUI and HyperOS, giving you direct access to the internal components of any .mtz package.
You can edit theme metadata, swap out wallpapers, replace app icons, and adjust XML configuration files directly on your phone without needing a computer. Once you finish your edits, the app repacks the assets into a ready-to-install MTZ file.
| Application Name | MTZ Editor |
|---|---|
| Package Name | com.guffyapps.mtzeditor |
| File Size | 48 MB |
| Compatibility | Android 11+ / HyperOS / MIUI |
| Region | Only For Beta Users |
Experiencing bugs with the newest release? You can easily roll back by downloading an older, stable build below.
Installing system application updates manually is a straightforward process. Follow these quick steps to apply the Latest update to your device:
.apk file to your device's internal storage.Yes. This package is completely unmodified and safely extracted from official global ROMs. It carries the original cryptographic signature, meaning it will seamlessly upgrade your existing app safely.
No root access or unlocked bootloader is required. Because this is an official file, it installs exactly like any standard application from the Google Play Store or native app vault.
If you face any performance issues, go to your phone's Settings > Apps > Manage Apps. Search for MTZ Editor, tap on it, and select "Uninstall updates" at the bottom of the screen to restore the factory version.
