How to find out the firmware on Xiaomi 12: from basic settings to hidden commands

You may need to know the firmware version on Xiaomi 12 in a variety of situations: before installing custom software, diagnosing problems or checking the relevance of updates. However, not all users know that there are at least 5 ways to get this information – from standard menus to technical commands for experienced users. In this article, we will discuss each method in detail, taking into account the features of MIUI and the Snapdragon 8 Gen 1, hardware platform on which the Xiaomi 12 series is built.

It is important to understand that the firmware version is not only the MIUI build number, but also a combination of several parameters: Android version, regional code (Global/EU/China), firmware type (Stable/Beta/Developer) and compilation date. For example, the inscription MIUI 14.0.5.0.TLBCNXM stands for MIUI 14, build 0.5.0 for Xiaomi 12 (TLB), Chinese version (CN), stable branch (XM).

Method 1: Using the standard About Phone menu

The easiest and safest method is to use the built-in MIUI settings, which require no additional tools and is suitable even for beginners.

  1. Open the Settings app** (cog icon).
  2. Scroll down and select the About Phone section.
  3. Tap on the MIUI version – the full firmware line will be displayed here (for example, 14.0.3.0.TLBRUXM).
  4. For detailed information, click on the version bar several times in a row – a hidden menu will open with data about the Android version, kernel and build number.

Note the regional suffix at the end of the line version:

  • 🌍 RU — Russia/Global
  • 🇪🇺 EU — Europe
  • 🇨🇳 CN — China
  • 🇮🇳 IN — India

This information is critical if you plan to reflash the device – installing firmware with an inappropriate regional code can lead to the module locking. NFC or trouble 4G-net.

📊 How often do you check the firmware version on your Xiaomi?
Only before the update
Once a month
Never checked.
I don't know how to do that.

Method 2: Use the code #4636##

The hidden Android engineering menu provides advanced system data, including firmware version and information about the baseband module (responsible for communication), which works on all Xiaomi 12 smartphones, regardless of the MIUI version:

  1. Open the phone application** (keyboard set).
  2. Enter the combination: ##4636### – the Testing menu will automatically open.

Here you'll see:

  • 📱 Android version (for example, 13) TKQ1.221114.001)

💡

If the ##4636### code doesn’t work, try entering it without the last star or use the Hidden Settings app from Google Play.

⚠️ Note: Do not change the settings in this menu unless you are sure of their purpose, such as manually changing the type of network (2G/3G/4G) It can cause loss of connection.

Method 3: Through ADB-Teams (for advanced users)

If you want the most complete firmware information, including bootloader and recovery, use ADB (Android Debug Bridge), which requires connecting your smartphone to your computer and installing Xiaomi USB Drivers.

Instructions:

  1. Enable USB debugging in the developer settings (Settings → About Phone → MIUI version (shoot 7 times) → Additional → For developers).
  2. Connect Xiaomi 12 to your PC and confirm the debugging permission.
  3. Open the command line (Windows) or terminal (macOS/Linux) and type:
adb shell getprop ro.build.version.incremental


adb shell getprop ro.miui.ui.version.name




adb shell getprop ro.build.version.release

Team results:

  • 🔢 The first command will return the assembly number (for example, 14.0.3.0.TLBRUXM).
  • 📲 Second version MIUI (for example, V14.0.3.0.TLBRUXM).
  • 🤖 The third version is Android (for example, 13).

Install Xiaomi USB Drivers| drivers

Enable debugging on USB|

Connect the original USB-cable|

Start the command line on behalf of the administrator-->

⚠️ Attention: Use ADB With root rights (if the device is rooted) it can trigger a Knox trigger on some Xiaomi models, which cancels the warranty. On Xiaomi 12, this risk is minimal, but not excluded with incorrect commands.

Method 4: Through the application "MIUI Version" (for custom firmware)

If your Xiaomi 12 runs on custom firmware (like LineageOS, Pixel Experience or Xiaomi.eu), standard methods may show incorrect data, in which case the specialized application “MIUI Version”** (available on Google Play or via APK) will help.

Advantages of the annex:

  • 🔍 Shows the real version MIUI, even if the system is modified.
  • 📊 Displays firmware types (Stable/Beta/Developer/Custom).
  • 🔗 Offers links to official and informal updates.

How to use:

  1. On the home screen you will see: MIUI Version (e.g. 14.0.3.0) Android Version (e.g. 13) Device Codename (e.g. cupid for Xiaomi 12)
What is the codename of the device?
Codename is the internal designation of the model in firmware. For example: - Xiaomi 12 - cupid - Xiaomi 12 Pro - zeus - Xiaomi 12X - psyche Knowledge of codenames is necessary for finding custom firmware and mods.

Method 5: Checking with Fastboot Mode (for locked devices)

If the smartphone is not turned on or locked, the firmware version can be found through Fastboot mode, which is useful when restoring the device or unlocking the bootloader.

Instructions:

    How do I know which firmware is installed – global or Chinese?
    There are three ways: Look at the suffix in MIUI: RU/EU/IN is global/regional. CN is Chinese. Check for Google services: if they don't, Chinese firmware. Go to Settings → Additional → Region: if there's no Russia/Europe on the list, CN firmware.
    What if the firmware version is unknown (the device is not turned on)?
    If the smartphone does not respond to buttons, try: Connect to charge for 30 minutes - sometimes a discharged battery blocks access to the Fastboot. Use Test Point (the point for forced login to EDL Mode) if the device is in a hard brick state. Contact the service: wizards using Mi Account and EDL will restore the firmware even without turning on.
    How to upgrade to Xiaomi 12 if the system does not find updates?
    Possible causes and solutions: 🔄 Regional Block: If you have Chinese firmware (CN), Global updates won't be displayed. So, the solution is to reflash to the global version. ⏳ Delayed distribution: Updates come in waves. Wait 1-2 weeks or check manually through Settings → Updating the system. 🔧 Modified firmware: If you use custom software, updates OTA They won't work. Install the update manually through TWRP.
    Is it safe to install MIUI beta on Xiaomi 12?
    Beta version (Developer) ROM) a number of risks: ⚠️ Unstable operation: Camera, communication or battery bugs are possible. 🔒 Security issues: Beta firmware may contain vulnerabilities. 🔄 Difficulty rollback: Sometimes you can only return to a stable version through a full flashing. If you still want to try it, back up through Mi Cloud or TWRP. Unlock the bootloader (instructions on the official website). Install the beta version using the Mi Flash Tool or OTA-packet.