How to unlock Xiaomi Poco X3 Pro: from bootloader to Mi Account

Xiaomi Poco X3 Pro is one of the most popular smartphones among Android customization enthusiasts. Its powerful Snapdragon 860 processor, 120 Hz screen and affordable price make the device an ideal candidate for custom firmware installation. However, before any manipulation of the software, you need to unlock the bootloader, a procedure that often raises questions for beginners.

In this article, we will discuss all types of unlock for Poco. X3 Pro: From the official bootloader’s enloque via the Mi Unlock Tool to bypassing the Mi Account lock and reset FRP (Factory Reset Protection: We will focus on common errors (e.g. Couldn't unlock or This device is locked) and how to solve them. TWRP, LineageOS or just want to sell your phone without being tied to your account – this guide is for you.

Warning: unlocking the bootloader resets all data on the device and can result in a loss of warranty.The procedure takes anywhere from 72 hours to a week due to Xiaomi's security policy. Ready? Then get going!

1.Preparation for unlocking: what to do before Anlock

Before you start unlocking, make sure that all the preconditions are met. Missing at least one item can lead to errors or even a blink (inoperability) of the device.

First, check out the MIUI version on your Poco X3 Pro. A successful Anlok requires a MIUI Global Stable or MIUI China Stable version of at least 12.0.8. If you have custom firmware or beta installed, go back to stockware first via Fastboot.

Secondly, be sure to tie SIM-This is a Xiaomi requirement to protect against theft. Without the attached phone number, unlocking will not be possible. Also make sure that your account has two-factor authentication disabled - it can block access to the Mi Unlock Tool.

• 📱 Check the device model: go to Settings → The phone. → Model, should be indicated M2012K11AG (global version) or M2012K11AC (Chinese).
• 🔋 Charge the battery: the charge level should be at least 60%. Unlocking in Fastboot mode consumes a lot of energy.
• 💻 Install drivers: download Mi PC Suite or Qualcomm drivers for Fastboot.
• 🔗 Link your account: in Settings → Xiaomi account → Mi Cloud Make sure your device is linked to your account.

Make a data backup|Check the version. MIUI (12.0.8+)|Tie it down. SIM-card|Charge the phone to 60%+|Install Mi. PC Suite-->

If you bought the Poco X3 Pro hand-held, make sure that the previous owner untie your account from the device. Otherwise, after resetting the phone will require you to enter the username / password of the previous user, this problem can only be solved through Xiaomi Service Center or special FRP bypass services.

2. Official unlocking of the bootloader via Mi Unlock Tool

The safest way to unlock is to use the official Mi Unlock Tool, but there are two significant drawbacks to this method: waiting 7 days and limiting the number of unlocks (no more than 1 device in 30 days per account).

The process consists of three steps: linking the account to the device, waiting for confirmation from Xiaomi and actually unlocking.

Step 1: Linking your Mi Account to your device

1. Go to Settings → About Phone → MIUI version and tap 7 times to activate Developer Mode.
2. Back to Settings → Additionally. → For developers and include: 🔓 Unlocking OEM (may require input PIN-code) 🔌 Debugging by USB

ADB

adb shell


su -c "echo 1 > /data/property/persist.sys.oem_unlock_allowed"

If the command fails, use an alternative method via Fastboot:

fastboot oem unlock-go

Step 2: Waiting for confirmation (72–168 hours)

Once the account is tied, Xiaomi will start counting down, and you can check the unlock status in the Mi Unlock Tool, if it says "Added successfully. Wait XX hours," it's going to be done. You can't speed it up even if you unplug and re-link the account.

Less than 72 hours |3-7 days |Over a week |I still haven't waited-->

Step 3: Unlocking through Fastboot

When the timer is zeroed, follow the following steps:

1. Turn off the phone and press Volume Down + Power to log into the Fastboot.
2. Connect the device to your PC and start the Mi Unlock Tool (download here).
3. Sign in with the same Mi Account that is linked to your phone.
4. Press Unlock and confirm the action. In 10-15 seconds, you will see the message "Unlocked successfully".

The process of firmware through EDL looks like this:

1. Turn off the phone and connect it to the PC in EDL mode (this may require disassembling the device).
2. Run Mi Flash Pro, select a firmware file and press Flash.
3. Wait for completion (10-15 minutes) and the bootloader will be unlocked after the restart.

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If you don't have experience with EDL, you should contact a service center. Incorrect firmware can lead to a complete breeze (inability to recover without replacing the motherboard).

Another way is to use exploits to bypass locks, such as the XiaomiTool V2 utility automates the unlocking process through ADB and Fastboot, but these tools often require root rights and do not work on all versions of MIUI.

⚠️ Note: Using informal methods may lead to blocking IMEI If the phone was bought on credit or lease, unlock through EDL It can activate a protection mechanism against theft.

4. unlock Mi Account (if you forgot your password or bought a used phone)

One of the most common problems when buying Poco X3 Pro hand-held is binding to someone else’s Mi Account. After resetting the phone requires entering the username and password of the previous owner, and you can solve this problem in several ways, depending on the situation.

Method 1: If the previous owner can help

The easiest way is to ask the seller to untie the device through the Mi Account website.

1. Sign in under your account.
2. Go to Devices → Find Poco X3 Pro → Delete.
3. Confirm the action via SMS or email.

Method 2: Fastboot bypass (if the phone is unlocked)

If the bootloader is already unlocked, you can delete the account binding via Fastboot:

fastboot erase frp


fastboot erase userdata

After that, the phone will restart without being tied to the Mi Account, but all data will be deleted.

Method 3: Use of service codes (for some versions of MIUI)

On some firmware, the bypass through the engineering menu works:

1. Enter the dialer code: ##3646633##.
2. Go to Connectivity → Wi-Fi → WLAN Test.
3. Click Disconnect, then Forget Network.
4. Restart your phone – the lock may disappear.

⚠️ Note: The last method only works on MIUI 12.0.3-12.0.7 This bug has been fixed on new versions and the engineering menu won’t work.

5. Unlock FRP (Factory Reset Protection) on Poco X3 Pro

FRP (Factory Reset Protection) is a setting reset protection that is activated if a Google or Mi Account was attached to the phone. After resetting via Recovery, the device requires data input from the last account.

Method 1: Through settings (if you know the password from Mi Account)

If you know the details of your Mi Account but have forgotten your Google password:

1. On the lock screen, click Forgot your password.
2. Enter the data from Mi Account – this will reset the FRP lock.
3. After logging in, untie your Google account in the settings.

Method 2: Use of ADB (if debugging is enabled)

If USB debugging was enabled before reset, you can delete FRP via ADB:

adb shell


su




rm /data/system/gesture.key




rm /data/system/locksettings.db




rm /data/system/locksettings.db-wal




rm /data/system/locksettings.db-shm

Method 3: Fastboot Firmware (Universal Method)

If other methods do not work, only complete flashing remains:

1. Download the official firmware for Poco X3 Pro (select the Fastboot version).
2. Unpack the archive and launch the script flash_all.bat (for Windows or flash_all.sh (for Linux/Mac).
3. Wait until it’s finished, the phone will restart without FRP.

6. Frequent errors and their solutions

Even with strict follow-up, users often encounter errors, and let's look at the most common ones and how to fix them.

Error: "This device is locked"

This error appears if you are trying to flash custom Recovery (like TWRP) on a locked bootloader.

• 🔓 Unlock the bootloader through the Mi Unlock Tool (see Section 2).
• 📱 If the bootloader is already unlocked, but the error remains, follow the command: fastboot flashing unlock

The error is "Anti-rollback check fail."

This error occurs if you try to flash the old version of MIUI over the new one. Xiaomi blocks the firmware rollback to protect against exploits.

• 🔄 Switch the same or newer version MIUI.
• 🛠️ If you need an old firmware, use it. EDL-regime (see section 3).

Error: "Invalid IMEI" after unlocking

Sometimes, after unlocking the bootloader or firmware, the IMEI disappears through the EDL. You can restore it through the engineering menu:

1. Enter the code ##4636##.
2. Go to Phone Information → Choose. SIM.
3. If IMEI is displayed as Null, use the Maui META or SN Write Tool for recovery.

⚠️ Note: If after recovery IMEI The phone does not catch the network, check the file modemst1 and modemst2 section /nvdata. Their damage may require reflashing the modem part.

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Before any firmware save the original IMEI and NV-data files. To do this, make a backup of the nvdata and nvram partitions in TWRP.

7. What to do after unlocking?

When the bootloader is unlocked, new opportunities open up before you: installing custom firmware, cores, mods, etc. However, do not rush to immediately flash TWRP - first follow a few important steps.

Step 1: Installation of TWRP Recovery

For Poco X3 Pro, it is recommended to use the official version of TWRP.

fastboot flash recovery twrp-3.7.0_12-vayu.img


fastboot boot twrp-3.7.0_12-vayu.img

After the first download to TWRP, be sure to back up the persist partition, otherwise there may be problems with IMEI.

Step 2: Magisk firmware for root rights

If you need root rights, go to Magisk via TWRP:

1. Download the latest Magisk.zip.
2. In TWRP, select Install → Select file → Switch.
3. Check the root through the Magisk Manager app.

Step 3: Install custom firmware

Popular firmware for Poco X3 Pro:

• 🔄 LineageOS – pure Android without unnecessary applications.
• ⚡ Pixel Experience – firmware with the corporate interface Google Pixel.
• 🎯 ArrowOS – Balance between performance and functionality.

Before the firmware be sure to check compatibility with your model (vayu for the global version, vayu_in Incompatible firmware can lead to a brik.

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After installing custom firmware, be sure to flash GApps (Google Apps), otherwise Google Play, YouTube and others will not work.

FAQ: Answers to Frequent Questions