Owning a Xiaomi device often involves wanting to take full control of the operating system, whether it’s custom firmware or super-user rights. However, the first and most critical barrier to this is the bootloader, which is locked by default. Understanding the current status of this component is a fundamental step before any manipulation of your smartphone’s software.
There are several proven methods to know with 100% accuracy whether a bootloader is locked on your Redmi or POCO. Some require a computer connection and minimal technical knowledge, while others are available right in the device interface. We will look at each one so you can choose the most suitable option for your situation.
It is important to realize that the status of the bootloader directly affects the security of data and the possibility of warranty service. Before you move to active actions, you need to clearly understand the state of your device right now, this will save you from unforeseen errors and loss of important information during further operation.
Visual verification when the device is turned on
The easiest and fastest way to know the status of the bootloader is to watch the screen closely as you turn on your smartphone, and when you press the power button, the device undergoes a series of initial checks, and that's when the system outputs the service information about the security status.
If the bootloader is unlocked, you'll see a warning screen with a hare repairing an android and the words FASTBOOT. The text below is usually in English saying that the bootloader is unlocked. This is the standard behavior for devices that have been unlocked through the official Mi Unlock service.
In the case when the boot loader is locked, the screen when booting will be clean, without unnecessary labels and warnings, immediately moving to the MIUI or HyperOS logo. The absence of a message about the unlocking state is a direct indicator that the protection is active and access to low-level partitions is closed.
⚠️ Note: If you see the “Unlocked” on the boot screen but did not unlock yourself, this may indicate that the device was previously in repair or bought from hand with the already modified software.
It is worth noting that on some global firmware versions, the visual status display may be hidden by the manufacturer to simplify the user experience. In such cases, relying solely on visual inspection at start is not recommended, and software-based verification methods should be resorted to.
Using Fastboot Mode for Diagnostics
Fastboot mode is a low-level protocol that allows you not only to flash partitions, but also read their current state. It is the most reliable technical method that provides comprehensive information about the configuration of the bootloader.
To go into this mode, you need to turn off your smartphone and press down and power buttons at the same time. Hold them until the image with the hare or the Fastboot logo appears. Once you connect the cable to your computer, you can read the status directly from the screen or through the console.
Fastboot screens often (but not always) write status with Device State - Locked or Device State - Unlocked. If you don't have a sign, you'll need to use the command line. You'll need to install ADB and Fastboot drivers on your PC.
☑️ Preparation for Fastboot check-up
After connecting the device, enter the command in the terminal:
fastboot getvar allIn the output command, find the row (bootloader) unlocked. The value of yes means that the protection is removed, and no means that the bootloader is locked. This is the most accurate technical method that works even if the operating system does not boot.
Checking through the menu for developers
The built-in MIUI and HyperOS interface gives users access to advanced settings where you can find information about the unlock status, a method that is convenient because it does not require a computer or additional cables.
First, activate the developer menu. Go to Settings → About Phone and quickly press 7 times on the MIUI Version (or OS Version). Once you have become a developer, go back to the main settings menu.
Follow the path Further → For developers. In this list, look for Mi Unlock Status. When you click on it, you'll see the current state: "Blocked" or "Unblocked." Also, here you can see the binding to your Mi Account.
- 🔒 Blocked: Standard state to ensure system integrity and data security.
- 🔓 Unlocked: Status allowing custom recaps to be installed and system files modified.
- ⏳ Waiting: If you have applied, a countdown timer (e.g. 168 hours) may be displayed here).
This method is especially useful for quick checks before buying a used device, as it does not require the USB debugging mode, which is often disabled by default.
Diagnostics with ADB teams
For more advanced users who have already set up the Android Debug Bridge environment on their computer, there is the option of obtaining status through ADB. This method works when the smartphone is turned on and running normally.
You need to enable debugging over USB in the developer menu and connect the phone to the PC. After confirming the connection on the smartphone screen, enter the following command in the command line:
adb shell getprop ro.boot.flash.lockedThe result of the command execution will be extremely concise. The number 0 means that the bootloader is unlocked, and the number 1 indicates that it is locked, which is the standard logical value for most Android devices.
What does ro.boot.flash.locked mean?
You can also use the adb shell pm list packages to check for system applications associated with the blocker, but the getprop method is a more direct and reliable indicator of the current state of iron.
Analysis through Mi Unlock
The official Mi Unlock Tool, designed to unlock, also serves as a great diagnostic tool. Even if you don't plan to unlock the device right now, launching the program will allow you to get an accurate status from Xiaomi servers.
Run the program on your computer, log in to your account and connect your smartphone in Fastboot mode. The utility automatically reads information from the device. The main window will display a button that says either "Unlock" (if unlockable and the device is locked) or a message that the device is already unlocked.
| Status at Mi Unlock | Meaning | Possible action |
|---|---|---|
| Unlock | bootloader locked | You can request unlocking. |
| Unlocked | The bootloader is unlocked | All modifications are available |
| Waiting (168h) | Waiting for time | We have to wait for the timer to end. |
| Account mismatch | Wrong account. | Sign in to the same Mi Account as the phone |
Using official software ensures that you get up-to-date information synchronized with the manufacturer’s servers, eliminating the possibility of software errors reading local flags.
Comparative table of verification methods
To organize the knowledge gained and choose the best method for your situation, it is recommended to consult a summary table, which will help you quickly navigate depending on whether the phone is turned on and whether there is a computer at hand.
Each method has its advantages: the visual way requires no skills, Fastboot provides technically accurate data, and the developer menu is convenient for quick check without wires.
For example, visual testing can give a false positive on custom downloaders, so confirmation via fastboot getvar will not be superfluous.
- 💻 PC availability: Required for Fastboot methods, ADB Mi Unlock.
- 📱 Access to the system: Needed to be checked through the developer menu.
- 👀 Speed: The visual method is the fastest, but not always informative.
⚠️ Warning: When using methods that require a PC connection, make sure the cable is in good working order. Poor contact can lead to communication interruption and erroneous determination of device status.
Understanding the differences between these methods will make you feel more confident when working with a device, and you will always know which tool to use in a particular situation.
💡
Save a screenshot of the bootloader status before selling the phone. Customers often ask for confirmation that the device is original and has not been reflashed by third-party software.
Frequently Asked Questions (FAQ)
Does unlocking the bootloader affect the operation of banking applications?
Can I lock the boot loader back after unlocking?
Does the bootloader status check reset data on the phone?
Does Locked status guarantee that the phone hasn't been opened?
💡
Uploader status check is a safe diagnostic procedure that does not harm the device, but provides critical information for further use of the smartphone.
In conclusion, determining the status of a bootloader on Xiaomi is a basic skill for any owner of these devices. Whether you are planning a deep customization or just want to make sure that your gadget is safe, knowing these methods will be useful.
Use your knowledge responsibly. Understanding your device’s security architecture is the first step to making smart and safe use of modern technology.