OEM-Xiaomi unlock: what it is and why you need simple language

You bought a Xiaomi smartphone and came across a mysterious phrase «OEM-Or maybe you're trying to install custom firmware, but your phone insists on "unlocking the bootloader"? Don't worry, it's not a virus or a malfunction. It's a standard security feature that the manufacturer has built into your machine.

In this article, we will explain what is OEM-Unlocking on Xiaomi in simple language – without technical jargon and clever terms. You will learn why it is needed by the average user (spoiler: not only for “advanced”), how to turn it on or off, and what pitfalls await beginners. Why Xiaomi is so protective of its phones from “interference” and what happens if you ignore the warnings of the system.

If you've never heard of fastboot, Mi Unlock Tool or custom firmware, that's fine. We'll explain it as if we're telling a friend over a cup of coffee. And if you're an advanced user, you'll find some relevant nuances for Xiaomi in 2026 (including changes to the unlock policy).

What is it? OEM-Unlocking on Xiaomi and why you need it

OEM-Unlocking (or unlocking the bootloader) is a “key-key” for your smartphone that allows you to install unofficial software. By default, all Xiaomi phones (like most Android devices) come with a locked bootloader. This means that the system allows you to run only those firmware that are signed by the manufacturer.

Why would Xiaomi do that? It's simple.

• 🔒 Security: A blocked bootloader protects against viruses that could replace system files.
• 📱 Stability: Users will not be able to accidentally “break” the phone with incompatible firmware.
• 🚫 Control: the manufacturer restricts the installation of pirated versions of Android or modified firmware (for example, with remote services Google).

But then why would someone want to unlock this bootloader?

• 🔄 Install custom firmware (like LineageOS or Pixel Experience) to get a “clean” Android without shell MIUI.
• ⚡ Getting root rights to deep-set up the system (for example, removing embedded applications).
• 📱 Brick recovery (if the phone stopped turning on after a failed update).
• 🔓 Bypassing regional restrictions (for example, for firmware of the global version) MIUI Chinese smartphone).

It’s important to understand that unlocking the bootloader on Xiaomi automatically resets the phone to factory settings and erases all data. This is an irreversible process – once unlocked, you can’t lock the bootloader again without completely flashing it.

OEM-Unlocking vs Unlocking the bootloader: what is the difference

There's a point in Xiaomi's settings «OEM-Unlocking, and on the Internet, everybody talks about unlocking the bootloader.

OEM-Unlocking is the first step towards unlocking the bootloader. It's an option on the developer menu that allows unlocking but doesn't do it. Think of it like a "green light" for the actual unlock process.

A unlocking the bootloader is a full-fledged procedure, which is carried out through the computer using the official Mi Unlock Tool utility. OEM-Unlocking in the settings phone just won’t let you continue.

In practice, the process looks like this:

1. You turn it on. OEM-unlocking.
2. Link your Mi Account to your device (required!).
3. Connect your phone to your PC and start the Mi Unlock Tool.
4. The utility sends a request to Xiaomi servers, and if all is well, the bootloader will be unlocked.

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If you just want to install APK-third-party, OEM-You don't need to unlock it, just allow installation from unknown sources in the security settings.

Step-by-step instruction: how to turn on OEM-unlocking

Before you start unlocking the loader, you need to turn on OEM-It takes less than a minute, but without this step, you can't do anything.

Activate Developer Mode (click 7 times on "Version") MIUI")

Enable debugging by USB in the developer menu

Linking your Mi Account to your phone

Backup your data (it will be erased!)

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Now the detailed instructions:

1. Activate Developer Mode: Go to Settings → The phone. → Version. MIUI And click on this 7 times in a row, and you'll see a notification saying, "You've become a developer!».
2. Turn it on. OEM-Unlock: Return to the main settings menu, open Additional settings → Developer settings. Find the item "Unlock" OEM» And move the slider to the right. If there's no point, update it. MIUI last-minute.
3. Link your Mi Account: In the same developer menu, find Mi Unlock Status and click Add Account and Device. Enter your Xiaomi account details (if not, sign up). Without this step, unlocking is impossible!
4. Put the debugging on. USB: In the developer menu, activate “Debugging by” USB». When connecting to a PC, select the "File Transfer" mode» (MTP).

After this, the phone is ready to unlock the bootloader through the Mi Unlock Tool.

How to unlock a bootloader on Xiaomi with Mi Unlock Tool

Now, the most important step is unlocking the bootloader.

• 🖥️ Windows computer (7/10/11, x64)
• 🔌 Original. USB-cable (not cheap charging!)
• 📱 Charged phone (at least 60%)
• 🔐 Mi Account linked to the device

Attention! Once unlocked, all the data on the phone will be erased, including photos, contacts and apps, and if you don't backup, you can't get it back.

Instructions:

1. Download Mi Unlock Tool: The official utility can be found on the website en.miui.com/unlock. Download only from this source - other versions may contain viruses.
2. Install drivers: When you first connect your phone to your PC in fastboot mode, Windows may not recognize the device. Install the drivers manually (you can find them in the archive with the Mi Unlock Tool).
3. Put your phone in fastboot mode: Turn off your phone. Press the power button. + Loudness down on 5-10 seconds until the hare appears in the hat-eared (fastboot logo).
4. Connect your phone to your PC: Launch the Mi Unlock Tool, log in to your Mi Account (the same one that is tied to your phone!). The utility should show the message "Phone connected."
5. Start unlocking: Press Unlock and confirm the action. 10-30 When it's finished, the phone will automatically restart.

If it was successful, the next time you turn on, you'll see a warning that says "This device is unlocked" (some models have a red sign when you boot it).

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New Xiaomi models (2023-2026) may require waiting 7-168 hours after the account is tied before unlocking.

Frequent mistakes and how to fix them

Even if you follow the instructions, the unlocking process may not go according to plan, and here are the most common mistakes and solutions.

A few more nuances:

• ⏳ Waiting Timer: New Xiaomi models may have a timer (from 7 to 168 hours) after the account is tied.
• 🔌 Problems with USB: Use the original cable and port USB 2.0 (on some PCs) USB 3.0 causes errors).
• 📱 Version mismatches: If Mi Unlock Tool asks you to update your firmware, do so before unlocking.

fastboot devices

If the list is empty, the drivers are not installed.-->

What to do after unlocking the loader

Now that the bootloader is unlocked, you're in a new position, but it's important to understand that there are risks as well.

• 🛡️ Security: Unlocked bootloader makes phone more vulnerable to viruses.
• 🔄 Updates: official updates MIUI They may not be installed or work properly.
• 🚨 Warranty: Some service centers refuse warranty repairs if the bootloader is unlocked.

What can we do next?

• 📱 Install custom recovery (for example, TWRP) backup.
• ⚡ Get root rights through Magisk (for deep system setup).
• 🔄 Swipe custom firmware (e.g. Pixel Experience for “clean” Android).
• 🔓 Remove embedded applications (bloatvar) without rooting ADB.

But remember:

⚠️ Note: Installation of unofficial firmware or modifications may result in loss of functionality (e.g., stop working) NFC, camera or wireless charging. Before you run the firmware, check the reviews on compatibility with your model in the forums. 4PDA or XDA Developers.

Xiaomi models that can’t be unlocked (2026)

Xiaomi is gradually tightening its unlock policy, and starting in 2023, some models are either completely locked to unlock or require additional action.

If your model is not unlocked through the Mi Unlock Tool, do not attempt to use “circumvention” methods (for example, through the use of the Mi Unlock Tool). EDL). It can:

• 🔥 Bring the phone to a complete failure ("brick»).
• 🚫 Deprive you of the possibility of official restoration.
• 💸 It will require expensive repairs (sometimes it’s cheaper to buy a new phone).

For new Xiaomi models, check the current information before unlocking:

• 🌍 Official forum c.mi.com
• 📱 4PDA (partition)
• 🔧 XDA Developers (instructions for developers)

FAQ: Answers to Frequent Questions