The USB debugging mode on Xiaomi smartphones is a hidden feature that can’t be performed without many technical operations, from installing custom firmware to recovering data via ADB. However, it’s not as easy as it seems. The manufacturer hides this option behind several layers of protection, and in newer versions of MIUI (for example, MIUI 14/15), the activation algorithm has changed. If you are trying to connect Redmi, POCO or Xiaomi to a computer, but the system does not see the device or gives an error “Unauthorized” – this article will help to understand the reasons and offer working solutions.
We’ll look at not only the standard way to enable debugging through the developer menu, but also alternative methods – for example, how to unlock it through fastboot if the smartphone does not respond to commands. We’ll focus on typical errors (such as the absence of Qualcomm or Mediatek drivers) and how to fix them.
Why you need USB debugging on Xiaomi and what risks it carries
Debugging by USB (USB Debugging: Opens up the system functions of Android through a computer:
- 🔧 Install custom firmware (such as LineageOS or Pixel Experience) through TWRP.
- 📱 Recovering deleted data with the help of ADB pull or specialized utilities like Dr.Fone.
- 🛠️ Unlock the bootloader to deeply configure the system.
- 🖥️ Test apps in Android Studio or debug them through Logcat.
However, along with the opportunities, there are also risks:
- 🚨 Malware vulnerability: if you connect your smartphone to an infected PC, attackers will be able to access personal data.
- 🔄 Resetting settings: incorrect commands ADB This can cause the loss of all data without the possibility of recovery.
- 📵 Blocking the Mi Account: with frequent firmware change, Xiaomi may suspect a hack and block the device.
⚠️ Warning: If you sell or transfer your smartphone to another person, be sure to turn off debugging USB Otherwise, the new owner will be able to access your accounts through the developer menu. ADB backup.
Preparation: What to do before turning on debugging
Before you activate USB Debugging, follow a few mandatory steps:
- Check out the MIUI version. In older versions (before MIUI 12), the switching algorithm is different. You can find out the version in Settings → About Phone → MIUI version.
- Install the drivers. Without them, the PC won't recognize the device: 🖥️ For Windows: Download Mi PC Suite or drivers Qualcomm/Mediatek manually. 🐧 For Linux: Add udev rules for Xiaomi (instruction below). 🍎 For MacOS: Install Android File Transfer and Homebrew with Adb.
Unlock the loader
Xiaomi
fastboot
To check the connection, use the command in the terminal:
adb devicesIf the device is displayed as unauthorized, it means that debugging is enabled, but not confirmed on the smartphone. If the list is empty, the drivers are not installed or the cable is faulty.
Check out the MIUI version
Install drivers for your OS
Connect the original USB-cable (not a cheap replacement)
Allow the transfer of files in the notification menu
Disable the antivirus (it can block it) ADB)-->
Standard method: Include through the developer menu
This is the most reliable method, but it requires access to the smartphone's work screen, so if the device is locked or not responding, move to the next section.
- Activate the developer menu: Go to Settings → About the phone. Find the MIUI version and tap it 7 times in a row. You will be notified, "You've become a developer!"
- Turn on USB debugging: Return to Settings → Additional → Developer. Find the USB debugging option and move the slider to the right. Confirm the action by pressing OK in the pop-up window.
- Connect to your PC: Connect your smartphone and computer with the original cable (cheap cables often don't support data transfer). On your smartphone screen, you'll see a request: "Allow debugging over USB?", tick "Always allow from this computer" and click "Allow".