Many users of the Xiaomi ecosystem sooner or later face the need to implement third-party software or activate hidden system functions. The process of installing code or a specific application may seem difficult for a beginner, but in fact it is based on clear algorithms of actions. Smartphone owners often look for ways to circumvent regional restrictions or access beta versions of firmware that have not officially released in their region.
There are several methods of introducing the necessary components into the operating shell. MIUI The choice of the specific method depends on what exactly you mean by "code": it can be an installation. APK-File through file manager, using debugging bridge ADB For system changes or for secret engineering combinations, each of these pathways requires some training and understanding of the risks associated with software structure change.
It is important to understand that any manipulation of system files requires responsibility. Data security should be a priority, so before starting any work, it is recommended to create a full backup of important information. In this article, we will discuss all available methods in detail so that you can choose the most suitable device for your model.
Preparation of the device and enable debugging over USB
Before you start implementing any code or application, you have to prepare the smartphone itself. The basic requirement for most advanced methods is to activate the developer mode. Without this step, Android security will block attempts at outside interference. To start, go to the Settings menu. → About the phone and find the line "Version" MIUI» or "Version" OS».
Click on this line 7-10 times in a row until you notice that you have become a developer, and then a new option will appear in the main settings menu, "Additional" or "Extended settings", where you need to find the "Developers" section. Here you should activate the debugging switch over USB, which allows the computer to send commands to the phone.
When you connect your smartphone to your PC for the first time, a debugging permission request will appear on the device screen. Always check the RSA key print on your computer and phone screen before confirming to avoid connecting to fraudulent devices. Once confirmed, your computer will have full access to the file system to execute commands.
Don’t ignore the importance of installing current drivers on your computer. Without them, the system simply won’t see the connected device in Task Manager. Xiaomi owners often require the installation of universal ADB drivers or specific Qualcomm drivers if you plan to work with low-level protocols.
Methods of Installation of Applications and Code through ADB
The most universal way to put a code or application on a Xiaomi device is to use the Android Debug Bridge toolkit, which allows you to install applications even when the standard installer blocks the process. SDK Platform Tools from the official Android developer website.
Once you unpack the tools on your computer, open the command line in the tool folder. Connect your phone with a cable and enter a communication check command. If done correctly, you'll see your device's serial number. Use the command to install the app:
adb install name file.apk
If a standard installation is blocked by a security system, you can use the -r flag to reinstall or -d to allow downgrading, and you can install applications for all users of the system at once, which is important for multiplayer modes.
What if the ADB can’t see the device?
If the adb device command does not display the serial number, try changing the number. USB-You can use the original cable, you can switch the port on your computer, or you can reinstall the drivers, sometimes it helps to reboot the service. ADB The adb kill-server command and the subsequent adb start-server command, and there are also situations where you need to not only install, but also embed code into system settings, using the adb shell command, which opens the terminal directly on the device. You can run scripts, change registry settings, and activate hidden functions that are not available through a regular interface. Using secret codes and engineering menus, Xiaomi phones have special character combinations that allow accessing hidden partitions of the system. Entering these codes through a standard call opens up access to diagnostic tools. One of the most famous codes is ##6484##, which runs the hardware testing menu. CIT. To further customize the network and communication, the code ##4636## is used. Here you can change the preferred type of network, for example, make the phone only work in mode. LTE or 5G, Be careful: changing some parameters can lead to loss of signal.Combination code Menu Function Risk level ##6484## Testing equipment (CIT) Low ##4636## Phone and network information Average ##7780## Factory Reset High *#06# Display IMEI There is also a code to reset all settings to factory settings that does not require logging in to the menu. Its use should be extremely careful, as it deletes all user data without additional confirmation. Always double-check the characters you enter before pressing the call button. APK-Often, the phrase “put code” users mean installing an application from a file. APK, downloaded from the Internet. MIUI HyperOS has enhanced security, which by default blocks installation of programs outside the Google Play Store, and when you first try to run the installer, you will see a security alert. You will be prompted to go to settings and allow installation from a specific source, such as a Chrome browser or file manager. MIUI. The slider must be switched to the active position, and the system can then show a countdown timer (usually 10 seconds) before the final confirmation. ⚠️ Attention: Install APK-Files from Verified Sources Only. Files downloaded from dubious sites may contain malicious code that can steal your passwords or bank data. The installation process can be interrupted if potential threats are detected in the file with built-in antivirus. In this case, you can temporarily disable the Google Play Protect check, but immediately after installing the application it should be turned back on. This is a critical step to preserve the digital hygiene of the device. Working with superuser rights and Root access. Introducing deep system changes often requires Root rights. Obtaining these rights on modern Xiaomi smartphones involves a number of difficulties, including the need to unlock the Bootloader bootloader immediately after the Miotloader is unblocked from the application for 30 days. Once the bootloader is unlocked, the user can install custom recaps, such as TWRP, through which superuser rights are already implemented using the Magisk utility. This allows you to modify the system partition, remove undeleteable standard applications and run specialized software. Having Root rights opens up access to editing system files, such as hosts to block ads at the system level, or changing the processor frequency. However, this also makes the device vulnerable to some banking applications that may refuse to work on modified firmware. Posible errors and ways to fix them In the installation process, users often encounter an error in the APK code installation. This may mean that the Android version on your device is too old for the app, or the file has not been downloaded in its entirety. Another common problem is a signature error when trying to update the system application with a modified version. In this case, you must first remove the original application, which at the system level is possible only with Root rights or through the use of the Root. ADB The command is as follows: adb shell pm uninstall -k --user 0 name-pack ⚠️ Note: Removing system packages through ADB It can cause system instability or a "boot loop" (cyclical reboot), only remove components that you are fully confident of. If after installing the code, the phone began to behave incorrectly, try clearing the cache of the problem application or reset the network settings. In extreme cases, only a complete reset to factory settings with pre-saving data helps (FAQ) Is it safe to put code on a Xiaomi app? Security depends on the source of the code. Official updates and apps from trusted stores are safe. Third-party scripts and other security features. APK-files from unknown resources carry a potential risk of malware infection. APK? No, to install regular applications (APK) You don't need to unlock the bootloader. You just have to allow installation from unknown sources in the security settings. What do you do if the phone says "Installation locked"? It works with malware protection. Click “Details” or “Establish Still” and then confirm the action, you may need to enter a password from your Mi or Google account. Can you roll back changes after you have installed the code? Yes, if it was an application, you can delete it. If you have changed your system settings through ADB, you can return them with a recovery command or reset.