Poco smartphones have long been recognized as one of the most affordable devices for mobile enthusiasts. The Poco X3 NFC, based on the Snapdragon 732G processor, is no exception and offers extensive customization options. However, to gain full control of the device, you need to unlock the bootloader, a process that opens the door to customized recavers, superuser rights, and alternative firmware installation.
It is worth noting that unlocking is not just a technical procedure, but a legal action that changes the status of data security and security. Xiaomi has implemented strict restrictions that require waiting within 168 hours (7 days) after submitting an application. This time is necessary to verify the account and prevent device theft. Attention: all data on internal memory will be irretrievably deleted during the unlocking process, so creating a backup is a mandatory step before starting any manipulation.
In this guide, we will go into detail every step from preparing a Mi Account to finalizing a command in Fastboot. We will look at the typical errors users face and how to solve them. Quality training minimizes the risks of turning a smartphone into a brick and ensures stable operation of the system after modification.
Preparation of Mi Account and device binding
The first and most important step is to set up your account correctly: you need an active Mi Account with your phone number attached to it, go to your smartphone settings, select the Mi Account section, and log in. If you have multiple ecosystem devices, make sure you use the exact account you plan to use to unlock it.
Then activate the developer mode. To do this, go to the Settings menu → About the phone and quickly click 7-10 times on the MIUI version field. After the notification "You became a developer", return to the main settings menu and open Additional settings → For developers. Here you need to activate the Factory Unlock switch.
⚠️ Warning: When you turn on factory unlock, the system will warn you of security risks and data deletion. Confirm the action by entering the code from the SMS, if necessary.
Once the function is activated, Mi Unlock Status will appear in the developer menu. Click on it and link the current device to an acca-unt. Make sure the smartphone is connected to the mobile Internet (Wi-Fi sometimes causes anchor errors). Successful binding is confirmed by the corresponding message.
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Use mobile internet (3G/4G) to link your device to the Mi Unlock Status app, as authenticated Wi-Fi networks or corporate networks can block the connection to Xiaomi servers.
It is important to check the MIUI version. Sometimes global firmware has restrictions on unlocking if the device was purchased from a specific operator or in a specific region, in which case it may be necessary to change the region in settings or even reflash to the Chinese version (which is more complex and requires additional tools).
Necessary software and drivers for PC
You'll need a computer running Windows to do the procedure. On macOS or Linux, the process is possible, but requires emulators or special scripts, making it much more difficult for the beginner. The main tool will be the official Mi Unlock Tool.
Download the latest version of the program from the official website en.miui.com/unlock. The archive contains the executable file and the necessary components. miflash_unlock.exe And log in to your account. The program will automatically check for updates and install them.
- 📱 The official utility Mi Unlock (the latest version).
- 💻 Drivers. ADB Fastboot (usually included in Platform Tools or installed with Mi Unlock).
- 🔌 Original or quality cable USB Type-C (cheap cables may not support data transfer).
- 🔋 Charged battery of the smartphone (minimum 60%).
Pay special attention to drivers. If your computer doesn’t see your smartphone in Fastboot mode, you may not have an Android Bootloader Interface driver in your Device Manager, which may require you to manually install drivers from a folder with an unlock utility or use third-party packages like Universal ADB Driver.
Standby rules and lock timers
The most difficult psychological moment for many users is waiting. After the first attempt to unlock or link the device, the system imposes a temporary ban. Most often, the timer shows 168 hours, but in some cases, especially for new accounts or when changing the region, the period can be extended to 30 days.
You can't try to get around the wait by re-binding the device, it will only reset the timer or prolong the lock period. Mi Unlock is strictly synchronized with Xiaomi servers, and the time is counted in real time. Shutting down the Internet or reinstalling the system will not speed up the process.
| Account status | Standard waiting time | Possible complications |
|---|---|---|
| Old Account (active > 1 year) | 168 hours (7 days) | Rare server failures |
| New account | 7 to 30 days. | Verification requirement |
| Account with violations | Indefinite / 30+ days | IMEI lockdown |
| Corporate device | Impossible. | Admin's permission is required |
During the waiting time, you can safely use the smartphone in normal mode. The only limitation is that you should not perform a full reset (Wipe Data), as this may require re-associating the device to the account, which can theoretically knock down the timer, although in practice the server stores a time stamp.
What to do if the timer is not going?
Unlocking process through Fastboot
When the wait period has expired, you can start directly unlocking. Put your smartphone in Fastboot mode. To do this, turn off the Poco X3 NFC completely, and then press the Volume Down and Power buttons simultaneously. Hold them until an image of a hare repairing an android appears or the FASTBOOT inscription on the screen.
Connect your smartphone to your computer through USB-Run Mi Unlock on your PC. The utility must automatically identify the device. Press Unlock. A warning will appear that all data will be deleted. Confirm.
Connecting to miui server...
Success.
Getting unlock token...
Unlocking...
Unlock successfully.It takes between seconds and a couple of minutes, and the phone may reboot several times, the screen will go out and light up, and it is strictly forbidden to disconnect the cable or interrupt the program until a successful termination message appears.
☑️ Checklist before launch
Once successfully unlocked, the device will automatically reset to factory settings (Wipe Data), a standard Android security measure that prevents data from being stolen from an unlocked device.
Error and Problem Solving (Error 10008, 20040, etc.)
The process rarely goes perfectly smoothly for all users. There are often code errors that scare newcomers. For example, the error 10008 usually indicates problems with the network connection or Xiaomi servers. In this case, changing the DNS on the computer (by 8.8.8.8 from Google) or using a VPN, although the latter can, on the contrary, slow down the connection.
Mistake. 20040 Check Windows Device Manager: "Android Devices" or "Other Devices" should not have question marks. USB-port (preferably) USB 2.0, not 3.0/3.1) cable.
⚠️ Warning: If the program is stuck in the Unlocking phase for more than 10 minutes, don't panic. In some cases, the process is in the background. However, if the progress bar is dead, try restarting your phone in Fastboot and try again.
Another common problem is the message “Couldn’t verify device.” This happens if you try to unlock a device tied to another account, or if a complete reset was made after the link, in which case you need to log in again, bind the device and wait again (or wait for the original timer to end if the server saved it).
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Most mistakes are solved by changing. USB-port, cable, using a PC with a different operating system (or Windows version) and a stable Internet connection without corporate proxy.
Actions after unlocking: installing TWRP and Root
After successfully unlocking the Poco bootloader X3 NFC It becomes a testing ground, and the first step is usually to install a custom Recovery, TWRP Or OrangeFox. It allows you to do full partition backups, install modified kernels and patches.
To install TWRP, you will need a.img image file that is suitable for your model (codename vayu for the global version or bhima for the Indian/NFC version, although often compatible, it is better to check the specification).
fastboot flash recovery twrp_image_name.img
fastboot boot twrp_image_name.imgSuperuser rights (Root) are obtained through the installation of the Magisk archive. Download the Magisk apk file, rename it to.zip (or use the installation function in the application itself if you have access to the file system) and run through TWRP. This will give access to system files and the ability to remove embedded advertising and unnecessary MIUI applications.
- 🛡️ Install a root rights manager (Magisk) to control application access.
- 🧹 Remove System Garbage and Advertising Through System Mods.
- ⚡ Install a custom core to overclock the processor or save battery.
- 🔄 Install custom firmware (Pixel Experience, LineageOS) for pure Android.
Remember that some banking apps and services like Google Pay (now Google Wallet) are no longer working with the unlocked bootloader, but using MagiskHide or Zygisk modules, you can successfully bypass these checks and use the phone as usual.