Xiaomi Mi8 firmware: a complete guide with unlocking the bootloader and choosing software

Xiaomi Mi8 (codenamed dipper) is still popular with customization enthusiasts thanks to its powerful hardware (Snapdragon 845) and active community support. However, official updates from Xiaomi for this model have long been discontinued, and users are faced with performance problems, bugs of older versions of MIUI or the desire to install custom firmware like Pixel Experience or LineageOS.

In this article, you will find the current 2026 ways to run the Mi8 firmware, from official updates via MIUI Updater to custom builds via TWRP or Fastboot. We will discuss in detail how to unlock the bootloader (without which it is impossible to install unofficial software), choosing the right firmware version (Global, China, EEA), and solving errors like Anti-Rollback or “brick” of the device. Special attention is paid to security: how to avoid data loss and why firmware through unverified sources can lead to blocking IMEI.

If you're a beginner, start with the official methods. For experienced users, you'll find a lot of advice on ADB, Fastboot, custom Recovery. At the end of the article, you'll find an FAQ that answers a lot of questions and a list of reliable sources for downloading firmware.

1. Firmware Preparation: What to Do Before Starting

Xiaomi Mi8 firmware is a process that can take anywhere from 30 minutes to several hours depending on the method chosen. To avoid problems, prepare in advance:

• 🔋 Battery charge at least 60%. When discharged during firmware, the device can turn into a brick».
• 📱 Backup data. Firmware erases internal memory! Use Mi Cloud, Google Drive or local copying on your PC.
• 💻 Windows computer 10/11 (For Fastboot or Mi Flash Tool. Mac/Linux Possible problems with drivers.
• 🔌 Original. USB-Cheap cables can interrupt data transmission, which can lead to errors.
• 🔓 Unlocked bootloader (for unofficial firmware) without installation TWRP or custom software is impossible.

Pay special attention to the current firmware version. You can find it in the Settings menu → About Phone → MIUI version. This is critical for choosing the right firmware file: for example, if your Mi8 runs on MIUI 12 and you try to install MIUI 10, Anti-Rollback protection will work and the device will lock. Also check the firmware region (Global, China, EEA), as flashing to another version can lead to the loss of the network or features like Google Pay.

⚠️ Attention: If yours Mi8 purchased in China and works on MIUI China, firmware on Global without first unlocking the bootloader will lead to a "brick". Use only official Xiaomi tools to change the region.

For convenience, we have compiled a checklist of preparation:

Backup contacts and files|Check the version. MIUI region|Charge the phone to 60%+|Download firmware and tools (Mi Flash, ADB)|Install Xiaomi drivers on PC|Disable the antivirus (can block the Mi Flash Tool)-->

2. Unlock the bootloader on Xiaomi Mi8: step-by-step instructions

The bootloader on all Xiaomi smartphones is locked by default, a security measure that prevents unofficial software from being installed. To flash the Mi8 through TWRP or custom firmware, it must be unlocked. The process takes 72–168 hours (3–7 days) due to Xiaomi’s policy, but we will describe all the steps in as much detail as possible.

Important: unlocking will reset all data on the phone! Also note that after this procedure, the Xiaomi warranty is canceled (if it is still valid).

1. Turn off the Mi8.
2. Press Volume Down + Power to log into Fastboot Mode.
3. Connect your phone to your PC and run the command in ADB: fastboot oem device-info
4. If you see Device unlocked: false in the answer, the bootloader is locked.

To unlock, follow the instructions:

1. Link your Mi Account to your phone: Go to Settings → Mi Account → Sign in. Enter your Xiaomi account details (if not, sign up). Activate Find Device and Sync.
2. Apply for unlocking: Download Mi Unlock Tool (the official Xiaomi tool). Launch the program on behalf of the administrator and log in to your Mi Account. Connect Mi8 in Fastboot mode (as described above). Press Unlock - the program will start counting time (usually 168 hours).

Wait for the timer to finish.

Once the deadline has expired, reconnect the phone to Fastboot and launch the Mi Unlock Tool. Press Unlock again and the bootloader will be unlocked.

⚠️ Warning: If you see a Couldn't unlock error or Current account is different from the account info on the device, you are logged in to another Mi Account on your phone and to the Mi Unlock Tool. → Additionally. → For developers → Unlocking OEM. Less than 30 days have passed since the last unblocking (Xiaomi restriction).

Once successfully unlocked, you can start running firmware, but remember, your Mi8 is now vulnerable to malware, because anyone can install unofficial firmware on it. Don't download files from questionable sources!

3.Firmware methods Xiaomi Mi8: which one to choose?

There are three main methods of firmware Xiaomi Mi8, each of which is suitable for different purposes.

Let’s look at each method in more detail.

3.1. firmware via MIUI Updater (the safest way)

This method is suitable for updating the current version of MIUI without losing data, it does not require unlocking the bootloader and is suitable for beginners.

• ❌ You can not install firmware from another region (for example, from China to Global).
• ❌ You can’t go back to the old version (Anti-Rollback will work).
• ❌ Custom firmware not available.

Instructions:

1. Open Settings → About the phone → System update.
2. Click on the icon «⋮» (three dots) in the upper right corner and select Select firmware file.
3. Specify the path to the downloaded firmware file (.zip format).
4. Confirm the installation and wait for the reboot.

Where to download official firmware? Only from the official Xiaomi website. Choose the version for Mi8 (dipper) marked Recovery (not Fastboot!).

3.2. firmware via Fastboot (Mi Flash Tool)

This method allows you to install any official firmware, including downgrade (bypassing Anti-Rollback) or region change. It does not require unlocking the bootloader, but requires authorization in the Mi Account. Suitable for recovering the phone after crashes or flashing on a clean system.

Instructions:

1. Download the firmware in Fastboot format (.tgz or.zip file).
2. Unpack the archive in a folder without Cyrillic characters (for example, C:\Mi8_Fastboot).
3. Download and install the Mi Flash Tool.
4. Turn off the Mi8 and press Volume Down + Power to log into the Fastboot.
5. Connect your phone to your PC and start the Mi Flash Tool.
6. In the program, click Select and specify the folder with the unpacked firmware.
7. Select firmware mode: Clean all - complete cleaning (recommended when changing region); Clean all and lock - cleaning + lock bootloader (if you want to return the warranty); Save user data - data storage (not always stable).

Flash

⚠️ Note: If you see an error when you are running through Fastboot flash_write_failed or Anti-Rollback check fail, which means: You are trying to install firmware older than the current one (for example, with a MIUI 12 on MIUI 11). The firmware file is corrupted or not suitable for your model (Mi8 It has the code name Dipper, and Mi8 SE — You did not log into your Mi Account on your phone before the firmware, solution: download a newer firmware or use the Anti-Rollback bypass tool (at your own risk!).

Firmware via TWRP (for custom firmware)

If you want to install Pixel Experience, LineageOS or other custom firmware, you'll need TWRP, a customized recaveri, which requires an unlocked bootloader and is only suitable for power users.

Instructions:

1. Download. TWRP for Mi8 (file twrp-3.7.0_9-0-dipper.img or newer).
2. Install ADB and Fastboot on your PC (you can use Android Studio).
3. Turn off your phone and log in to Fastboot (Loudness Down + Power).
4. Connect. Mi8 Next Next post: Fastboot Flash Recovery twrp-3.7.0_9-0-dipper.img
5. Then reboot to the TWRP: fastboot boot twrp-3.7.0_9-0-dipper.img
6. In TWRP, make a backup of the current firmware (Backup → Select partitions → Swipe to Backup).
7. Sweat custom firmware: Copy the firmware file (.zip) to your phone or flash drive. In TWRP, select Install → Select file → Swipe to Confirm Flash. After installing the firmware, be sure to swipe GApps (if they are not included in the build) and Magisk (for root rights).

Popular custom firmware for the Mi8:

• 📱 Pixel Experience – Pure Android with Pixel features.
• 📱 LineageOS - stable assembly without excess software.
• 📱 Xiaomi.EU — MIUI China-bound.

💡

Before installing custom firmware, check it is compatible with your Mi8 modem. Some builds may not support 4G networks on some regional versions of the phone.

4. Solving errors when firmware Xiaomi Mi8

Even with strict follow-up, errors can occur, and we've collected some of the most common problems and solutions.

If your Mi8 has turned into a brick (it doesn't turn on, doesn't respond to buttons), don't panic. 90% of the time, it can be restored:

1. Try logging into Fastboot (Loudness Down + Power) and if you can, run the official firmware through the Mi Flash Tool.
2. If Fastboot is not available, try EDL (emergency boot) mode. To do this: Turn off your phone. Press Volume up + Volume down + Power for 10-15 seconds. Connect to your PC and use Mi Flash Pro for firmware.

Mi8

EDL

Xiaomi

5. Selection of firmware for Xiaomi Mi8: Global, China, EEA or caste?

One of the most important things is choosing the right firmware, which is how you run your business, whether you have Google services, whether you have Russian, or even how you communicate.

5.1 Official firmware from Xiaomi

• 🌍 Global Stable is the official firmware for the international market, supports Google services, Russian, but updates are less common than in China.
• 🇨🇳 China Stable is a Chinese firmware without Google services, but with more frequent updates. Supports Russian, but some features (such as Google Pay) do not work.
• 🇪🇺 EEA (Europe – similar to Global, but subject to European privacy laws (e.g., disabled statistics collection).
• 🧪 Beta is a test build with new features, but there are bugs, suitable for enthusiasts who want to try new products. MIUI first.

Where to download:

• Official website: https://new.c.mi.com/global/miuidownload/index
• XDA Forum: Xiaomi Mi8 section
• Xiaomi.EU: firmware without Chinese restrictions

Custom firmware: pros and cons

If you're not happy with it. MIUI, You can install an alternative firmware. Mi8:

• 📱 Pixel Experience is a pure Android with Google Pixel chips (like Now Playing and Call Screen.
• 📱 LineageOS is a stable build with minimalist design, suitable for those who like stock Android.
• 📱 Havoc-OS or CrDroid – customizable firmware with many settings.
• 📱 Xiaomi.EU — MIUI without Chinese software, with optimizations for Europe.

Advantages of custom firmware:

• ✅ No advertising and unnecessary apps (bloatver).
• ✅ More recent versions of Android (for example, Android 13 instead of Android 10 in the latest official version) MIUI for Mi8).
• ✅ Ability to fine tune (e.g., change processor frequency, disable unnecessary services).

Disadvantages:

• ❌ Possible bugs (for example, non-functioning) NFC print-scanner).
• ❌ No official support (updates coming from community).
• ❌ Risk of losing the guarantee (if it is still valid).

The recommendation is that if you want a stable phone for everyday use, stay on the official firmware. If you like experiments, try custom builds, but be prepared for possible problems.

💡

For Xiaomi Mi8 there is no official firmware on Android 11+. All builds above Android 10 are custom and can contain bugs.

6. Optimize Xiaomi Mi8 after firmware

After successful firmware, it is recommended to follow several steps to improve performance and stability:

• 🔄 Factory reset (if you were running over the old system) to avoid conflicts between old and new files.
• 🔒 Disabling Unnecessary Services: Go to Settings → Annexes → Autoboot and disable autostart of unnecessary programs. → Battery → Select Balanced Performance Mode.
• 📱 Customize gestures (if you have stitched custom firmware): In Pixel Experience, enable gesture navigation in Settings → System system → Gestures. MIUI Set up full-screen gestures in Settings → Display. → Full screen mode.
• 🔋 Battery calibration (if the charge goes down quickly after the firmware): Charge the phone to 100%, then discharge to 0%. Recycle 2–3 times. Or use the AccuBattery app to monitor.

If you have a custom firmware, you may need:

• 🔑 Install Magisk for root rights: Download the latest version of Magisk (Magisk-v26.4.zip). Flow through TWRP Like a regular zip file.