How to enable APK installation from unknown sources on Xiaomi Redmi Note 8: full instructions with nuances

Installing apps from unknown sources on the Xiaomi Redmi Note 8 is a necessary feature for users who want to go beyond the official Google Play store. APK-files from third-party resources, beta programs or applications that are not available in your region. MIUI This is a security block and you need to activate it manually.

In this article, we will discuss not only the standard way to enable the option through settings, but also alternative methods for different versions of MIUI, as well as the potential risks and ways to minimize them.

Why is Xiaomi blocking APK installations from unknown sources?

The ban on third-party app installations is a standard security measure implemented in both MIUI and pure Android.

• 🛡️ Protection against malware: APK-Files from unverified sources may contain viruses, spyware, or Trojans that can steal data or damage the system.
• 📱 Stability: Unoptimized apps can cause crashes, overheating or rapid battery drain on the Redmi Note 8.
• 🔒 Ecosystem Control: Xiaomi and Google are interested in users installing apps through official stores where moderation takes place.
• 📜 Licensing restrictions: Some APK may infringe copyright (e.g. modified versions of paid software).

However, the lock is not absolute: the system allows you to manually allow installation for specific sources (such as a browser or file manager).

⚠️ Attention: Redmi Note 8 with MIUI 12.5 and later, after the option is turned on, a warning from Mi Security may appear with a request to cancel the action. This is not a mistake, this is how the built-in antivirus works. It can be ignored or disabled (more about this below).

Standard method: Enable through security settings

The most reliable and recommended method is to activate the option in the security menu. MIUI 11-14 on the Redmi Note 8:

1. Open Settings (the gear icon on the main screen).
2. Go to the Appendix section → Application management.
3. In the upper right corner, press three dots (⋮) and select Special Access.
4. Slip on the item Install unknown applications.
5. Select the application you plan to install APK through (such as File Manager, Chrome or Telegram).
6. Activate the switch Allow installation from this source.

Important: permission is given separately for each application, and if you download APK through a browser and try to install it through a file manager, the system will block the installation, either allow access for the manager or open the file directly from the browser.

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If the option “Install Unknown Apps” is not on the menu, upgrade to the latest version of MIUI or use an alternative method through Developer Mode (described below).

Alternative methods of unlocking

If the standard method doesn’t work (for example, due to MIUI glitches or corporate policy constraints), try these options:

1. Through Developer Mode

This method is suitable for experienced users and requires the developer mode to be activated in advance:

1. Go to Settings. → The phone.
2. Tap 7 times on the MIUI version until you become a developer!
3. Return to the main settings menu and open Additional settings → For developers.
4. Find the USB Installation option (or USB Debugging) and activate it.
5. Connect Redmi Note 8 to your PC and use the command: adb install path to file.apk

2. via TWRP (for stitched devices)

If your Redmi Note 8 has a custom TWRP receiver, you can bypass the system limitations:

1. Download APK to the memory card.
2. Load to TWRP (clip Power + Volume Up).
3. Select Advanced → File Manager.
4. Go to the APK file and tap it for installation.

⚠️ Attention: Installation through TWRP It can cause an application to crash if it requires a signature verification MIUI. This is often the case with banking or Denuvo-protected games.

3. via ADB (no root rights)

If you have access to ADB, you can temporarily disable source verification:

adb shell settings put global install_non_market_apps 1

Once the device is restarted, the restriction will be removed for all applications. To return the lock, do:

adb shell settings put global install_non_market_apps 0

Table: Compatibility of methods with MIUI versions

* MIUI 13+ may require additional confirmation via Mi Account.

Frequent problems and their solutions

Even after the option is turned on, Redmi Note 8 users may encounter errors.

Error "Installation locked"

Causes and solutions:

• 🔄 Google Play Services Cash: Clear the cache in Settings → Annexes → Google Play Services → Warehouse.
• 🛡️ Mi Security Blocks: Turn off real-time protection in Settings → Security → Viral protection.
• 📁 Damaged. APK: Check the checksum of the file (MD5/SHA-1) Or download it again.

2. The "Install" button is inactive

This happens if:

• 🔋 Lack of space: Free up at least 500MB on the system partition.
• 📱 APK It is designed for a different architecture: Redmi Note 8 works on the ARM64. Make sure the file is compatible.
• 🔒 Lockdown OEM: Some of the firmwares need to be unlocked. OEM Unlock in the Developer Menu.

3.After the MIUI update, the settings reset

On the Redmi Note 8, after upgrading to MIUI 12.5+, the system automatically disables permission for unknown sources for all applications except system ones.

1. Before updating, write down a list of applications for which APK was allowed to be installed.
2. After the update, repeat the unlock procedure for each of them.

Security: How to minimize risks?

Installing APKs from unknown sources always carries risks, but they can be reduced by:

• 🔄 Update: Check for updates regularly APK through SAI (Split APK Installer).

The Redmi Note 8 also allows you to use the built-in Mi Security feature to scan the APK before installing:

1. Open Security on the main screen.
2. Go to the Virus Scanner. → Setting up → Scan. APK-file.
3. Activate the option and select Scan before installation.

⚠️ Note: Some modified APK (For example, from sites such as ACMarket or BlackMod, they may contain hidden mining scripts or advertising. SDK. They are not always detected by antiviruses, but they heavily load the Snapdragon 665 processor in the Redmi Note 8, causing overheating.

FAQ: Answers to popular questions

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On the Redmi Note 8 with MIUI 12.5+, additional confirmation via SMS or Mi Account may be required after the installation is enabled from unknown sources. This is a measure of protection against unauthorized actions, it cannot be disabled without detachment of the Xiaomi account.