u/Guffy_786

Hey everyone 👋

I made a lightweight Android app called MTZ Installer Pro for Xiaomi / HyperOS users who want to install third-party ".mtz" themes easily without complicated methods.

🔥 Features

✅ Install ".mtz" theme files directly

✅ Works on HyperOS & MIUI devices

✅ Remove Theme Trial Limit

✅ Apply themes permanently

✅ Lightweight & clean UI

✅ No ads

✅ Virus free

Download Free

📦 App Info

- App Name: MTZ Installer Pro

- Developer: Guffy

- Size: 6 MB

- Compatibility: HyperOS / MIUI

📋 Changelog

- Initial Release

- Direct MTZ Apply

- Added Theme Trial Removal

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📥 How to Install the APK

⚠️ First disable/turn off Play Protect temporarily because the app uses Accessibility Service and Android may block installation.

1. Enable Install from Unknown Sources

2. Install the APK

3. Open the app

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🎨 How to Install MTZ Themes

1. Download any ".mtz" theme file

2. Open MTZ Installer Pro

3. Tap Select MTZ File

4. Choose your theme

5. Tap Install / Apply

6. Open Xiaomi Themes app

7. Apply from My Themes

Done 🎉

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🔒 How to Apply Themes Permanently

After applying the theme:

1. Open Recent Apps

2. Long press MTZ Installer Pro

3. Open App Info

4. Scroll down and enable Allow Restricted Settings

5. Open Accessibility

6. Go to Downloaded Apps

7. Enable Hyper Theme Service

Then:

- Enable No Restrictions in Battery settings

- Pin the app in Recent Apps

Now the theme should stay applied permanently ✅

If anyone tests it on different HyperOS versions, let me know your results 👍