Modern Android smartphones offer users deep customization capabilities, but they require special tools to implement them. One of the key components of the ecosystem is the ADB and Fastboot bundle, which allows you to control the device at a low level. Owners of Xiaomi gadgets often face the need to use these tools to unlock the bootloader, install custom recoveries or fully restore the system after a crash.
Understanding Android Debug Bridge opens up hidden features that are not available through the standard settings menu, you can uninstall system applications, make full data backups or force updates, but working with low-level protocols requires care, as any error in commands can lead to the failure of the device.
In this guide, we will take a look at how you prepare your computer, install the drivers you need, and use the console in a basic way, how you can work differently, how to type commands correctly, and what to do if the device is not displayed on the system. Using debugging tools correctly is a powerful skill for any advanced user.
Preparation of the working environment and installation of drivers
The first step to managing your smartphone through a console is to install specialized software on your personal computer. You will need to download the SDK Platform Tools from the official developer website, as this package contains the current versions of executable files. It is not recommended to use third-party builds or older versions, as they may not work correctly with new models of phones.
After downloading the archive, you need to unpack it into the root directory of the disk, for example, in a folder. C:\platform-tools, To avoid long-track problems, you'll need to make sure that the computer has universal access. USB-Android drivers, which often come bundled with utilities or are installed automatically when you connect your device in debugging mode.
To properly work the communication between the PC and the gadget, you need to activate the hidden developer menu. To do this, go to Settings → About the phone and quickly click on the MIUI build number seven times. After the notification appears, return to the settings menu, find the option option and turn on the USB debugging slider.
It is important to use quality USB-cable, preferably original, because cheap analogues can only provide charging without transmitting data. When you first connect your smartphone to your computer, a debugging permission request will appear on the screen of the mobile device, which you need to confirm.
Differences between ADB and Fastboot
Many users confuse the two modes, although they perform fundamentally different functions and work at different stages of the operating system boot. ADB (Android Debug Bridge) functions when the operating system is already running or in Recovery mode. This protocol allows you to transfer files, install applications and execute shell commands.
In contrast, Fastboot runs at a lower level, launching before the Android kernel boots.This mode is designed to modify flash partitions, firmware boot images and unlock the bootloader. If the system is damaged critically and the phone doesn't turn on, the ADB won't work, but the Fastboot often remains available.
Compatibility table for regimes
Regime. ADB It requires a running operating system or Recovery. Fastboot mode is available even when the system is damaged if the boot loader is intact. ADB They don't work in Fastboot, and vice versa. To go to Fastboot mode, you usually use a key combination when the device is off: press the volume button and plug in the volume button. USB-The screen will change, and you'll see a hare repairing an android, which indicates that it's successfully entered firmware mode. Basic diagnostic and control commands Once you've set up your environment, you can go to practice. Open the command line in the utility folder and type in the adb device command. If configured correctly, you will see your device's serial number and device status, which confirms a successful connection. It displays a list of connected devices ready for firmware commands. If the list is empty, check the drivers in Windows Device Manager or try another one. USB-Among the useful commands for everyday use, there are some: 📱 Adb shell – opens the interactive command line inside the smartphone itself, allowing you to control the file system. 💻 adb reboot – performs a soft reboot of the device without the need to press physical buttons. 🔄 adb reboot bootloader - transfers the smartphone to Fastboot mode in a software way. 📸 adb shell screencap -p /sdcard/screen.png — It takes a screenshot of the screen and stores it in the memory of the phone, and it allows you to remotely control the device, which is especially useful when you write down instructions or demonstrate how the interface works. Adb pull allows you to copy files from phone to computer, and adb push allows you to download them back. Unlock Bootloader Unlock Bootloader is a must for those who plan to install custom firmware or obtain superuser rights. On Xiaomi devices, this process is officially supported, but requires pre-binding the Mi Account and waiting for 7 to 168 hours. Once authorized in the Mi Unlock Status app, the phone is switched to Fastboot mode. Connecting it to the PC, you need to start the Mi Unlock Tool utility and log into your account. The program will check the status of the device and, if the time is up, unlock the bootloader. ⚠️ Attention: The process of unlocking the bootloader will completely remove all data from the internal storage of the smartphone. be sure to back up important information before starting the procedure. For advanced users, it is possible to unlock through console commands if the device does not require waiting or already has the status of "Unclocked". The command fastboot oem unlock or fastboot flashing unlock initiates the process, but on modern Xiaomi models it is often blocked software in favor of the official utility. Install firmware and restore the system One of the main functions of the Fastboot mode is the firmware of memory partitions. This may be required when switching from the global version to Chinese or vice versa, as well as when recovering from unsuccessful experiments. For example, the command is used to firmware recavery: fastboot flash recovery recovery.img And for the installation of a full firmware, a script-automaticizer is often used. flash_all.bat, Hand-held firmware requires caution, because writing the wrong image into the system partition can turn the phone into a brick. Section Description Risk when firmware boot System core and frame High (reboot cycle) recovery Recovery Menu Recovery Medium (can be restored) system Basic operating system Critical (complete failure) userdata User data Loss of all data If after firmware the device is not When you download, try to run a fastboot reboot command or clear the cache through the Recovery menu.In some cases, a complete data cleanup by the fastboot erase userdata command is required, which will return the phone to a factory state. System garbage removal and bloatware shell MIUI HyperOS is known for a large number of pre-installed applications that cannot be removed by standard means. ADB You can safely uninstall the system software without getting root permissions. This uses a pm uninstall command with a flag for the current user. -k --user 0 You can find the name of the package through the commands adb shell pm list packages or using specialized utilities like Xiaomi. ADB/Fastboot Tools.Beware: Removing critical system components can disrupt your phone. ⚠️ Note: Do not delete packets that you do not know what they are intended for, and it is especially dangerous to touch components associated with the system framework or Google services. To return the remote application, it is enough to execute the installation command: adb shell cmd package install-existing name.packet This feature makes ADB an ideal tool for cleaning the smartphone from advertising and excess software, increasing the autonomy and speed of the device. Solving problems and connection errors In the process, users often face a situation where the computer does not see the device. If the device manager displays "Unknown Device" or a device with a yellow exclamation mark, you need to manually update the driver by selecting it from the list (Android Bootloader Interface for FastBboot or Android devices, but this is a problem on the screen from the user's ADBate. Unlock your phone screen and press "Allow." If the commands are slow or break, try: 🔌 Replace USB-cable for a better and shorter quality. 💻 Switch to port. USB 2.0 instead USB 3.0/3.1. 🛑 Disable the antivirus or firewall, which can block the connection. If the firmware process freezes, don't panic. Interrupting the process in the middle of writing a system or boot partition can be fatal. If the device stops responding, press the power button on the power button on the device. 15-20 Seconds for Forced Reset. Frequently Asked Questions (FAQ) Is it safe to use? ADB Using basic commands, such as file transfers or screenshots, is absolutely safe. However, commands that change system partitions or delete packets require knowledge. Does the warranty reset when using Fastboot? The Fastboot is not a violation in itself. However, unlocking the bootloader (Unlock Bootloader), which is often performed through this mode, officially voids the software warranty in most regions. Can you flash another brand's phone through Xiaomi ADB? No. Fastboot commands are universal, but the firmware images (.img) are strictly specific to each model. Firming an image from another device is guaranteed to knock out the smartphone. How to exit Fboot mode if the phone freezes long-terms (15-20 seconds) if the computer does not use the power, or the button, if the device is used to hold it.