How to flash Xiaomi Redmi 9 with the global version of MIUI: from unlock to installation

Installing global firmware on Xiaomi Redmi 9 (codenamed Lancelot) is a popular solution for users facing restrictions of regional versions. MIUI. Global firmware not only adds support for additional languages and services Google, but also eliminates unnecessary Chinese applications, improves compatibility with international SIM-However, the process requires carefulness: incorrect actions can lead to the locking of the device through the anti-rollback or loss of warranty.

In this guide, we will look at all the steps from device preparation to the final system setup, focusing on unlocking the bootloader (without it, installation is impossible), choosing the right version of the firmware for Redmi 9 (including the differences between the Stable and Developer branches), and solving typical errors like Couldn't verify fail device or Anti-rollback check. If you have never previously flashed a Xiaomi smartphone, start by studying the section on risks, this will help to avoid critical errors.

Why you should install global firmware on Redmi 9

The main difference between global firmware (MIUI Global) and Chinese (MIUI China) and regional (MIUI EEA/Russia/India) is the adaptation to the international market.

• 🌍 Full localization: Support for all European languages, including Russian, without the need to install third-party patches.
• 📱 Google Services: Preinstalled Google Play Services, Play Market and other apps that often crash in the Chinese version.
• 📶 Better compatibility with SIM-card: no restrictions on roaming or working with foreign operators (relevant for travel).
• 🔄 Regular updates: Global versions MIUI Get security patches and new features more often than regional builds.
• 🚫 No Bloatware: No Chinese apps like Mi Video, Mi Browser or GetApps that can’t be removed.

There are nuances, however, such as that some Chinese features (e.g. Mi Pay or Quick Apps) may not be supported in global firmware, and that all data will be reset once installed – backup is mandatory! It is also worth considering that switching from Chinese firmware to global firmware requires unlocking the bootloader, which will void the warranty (if it is still valid).

⚠️ Note: If your Redmi 9 was purchased in China and runs on firmware MIUI China, installing a global version may block the device due to the Anti-Rollback mechanism. MIUI In Settings → The phone. → Version. MIUI Compare it to the supported versions on the Xiaomi Firmware website.

Device preparation: Backup and unlock the bootloader

Before installing global firmware, two critical steps must be taken: save all data and unlock the bootloader, and skipping any of these can lead to loss of information or inability to flash the device.

1. Data backup

Installing firmware erases all user data, including:

• 📸 Photos and videos (including screenshots and downloads from messengers).
• 📞 Contacts, messages SMS/MMS call-book.
• 🎮 Application data (save in games, settings of messengers).
• 🔑 Wi-Fi passwords and accounts in apps.

For backup, use:

• 🖥️ Mi Cloud: In Settings → Xiaomi account → Mi Cloud → Backup. Minus is a volume limit (5GB on a free account).
• 📱 Local Copying: Through Settings → Additionally. → Backup and reset → Local backup. The file will be stored in internal memory.
• 💻 Computer: Connect the phone to USB file transfer (MTP) and copy the folders. DCIM, Downloads, Pictures, etc.

💡

If you use WhatsApp or Telegram, make a separate backup of chats in the settings of these apps. For WhatsApp: Settings → Chat → Backup (Google Drive required).

2. Unlock the loader

The bootloader on Xiaomi Redmi 9 is locked by default. To unlock it, you will need:

1. Link your Mi Account to your device (require to confirm your email and phone!).
2. Apply for unlocking through the official Mi Unlock Tool app.
3. Wait 7-15 days (depending on Xiaomi policy)

Step-by-step:

1. Download Mi Unlock Tool (Windows version)
2. Turn on the phone Developer Mode: go to Settings → About Phone and 7 times click on the MIUI version.
3. Back to Settings → Additionally. → For developers and activate: 🔓 Unlocking OEM (may require input PIN-code). 🔌 Debugging by USB.

Mi Unlock Tool

Mi Account

Couldn't verify device

⚠️ Note: Once the bootloader is unlocked, all data on the device will be reset, even if you did not install the firmware! Xiaomi can also block an account for 72 hours if you repeatedly try to unlock from one device. IP-address.

Choosing the Right Firmware for Redmi 9

For Xiaomi Redmi 9 (model M2004J19C, codenamed Lancelot) available several types of firmware:

For most users, Stable Global is the best choice. It has been tested and contains minimal bugs. If you want to get the latest MIUI features, you can try Developer Global, but be prepared for possible problems (for example, fast battery discharge or overheating).

When downloading the firmware, pay attention to:

• 🔢 Build number: must match the device code name (lancelot).
• 📅 Release Date: New versions contain current security patches.
• 📦 File type: Recovery ROM — It is installed through standard recovery (easier but with limitations). ROM — It is installed via the Mi Flash Tool (complete flashing).

Methods of installation of global firmware

There are three main methods of installing firmware on Redmi 9:

1. Recovery (for Recovery ROM) is easier, but with limitations.
2. Through Fastboot (for Fastboot ROM) – complete firmware replay, requires a PC.
3. TWRP (for custom firmware) is a flexible but risky method.

We will discuss the first two methods in detail, as they are officially supported by Xiaomi.

Method 1: Recovery Installation (for Recovery ROM)

This method is suitable if you downloaded a file with a.zip extension and a name like lancelot_global_images_V12.5.1.0.RJCMIXM_20210315.0000.00_11.0_global.zip.

Download Recovery ROM firmware for lancelot

Charge your phone at least 60%

Transfer the firmware file to the root of internal memory (not to folders!)

Disable screen lock (PIN/pattern lock)

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Step-by-step:

1. Rename the firmware file to update.zip (required!).
2. Move it to the root directory of internal memory (not to the folders!).
3. Turn off the phone.
4. Press the Volume Up + Power buttons to enter Recovery Mode.
5. Select a language (if available), then: Go to Install update.zip to System. Confirm installation. Wait for completion (5-10 minutes).
6. After restarting, perform the initial setup.

If E: Footer is wrong appears in the process, then the firmware file is corrupted - download it again. If E: Signature verification failed, check that the official firmware was downloaded, not custom.

Method 2: Installation via Fastboot (for Fastboot ROM)

This method is suitable for files with the.tgz or.zip extension containing the image folder. It requires a computer and a program called the Mi Flash Tool.

Step-by-step:

1. Download and install the Mi Flash Tool.
2. Unpack the archive with firmware in a folder without Cyrillic characters (for example, C:\lancelot_global).
3. Turn off your phone and put it into Fastboot mode: Press Volume Down + Power. Connect your phone to your PC via USB.

Mi Flash Tool

Select

Clean all

Clean all and lock

Flash

⚠️ Note: If there is an error in the Mi Flash Tool flash_all_lock.bat Is missing, so you didn't download Fastboot ROM, a Recovery ROM. Also check that there is a file in the firmware folder. flash_all.bat — His absence indicates a damaged archive.

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Use Clean all mode in the Mi Flash Tool if you plan to further manipulate the firmware (e.g. installing TWRP). Clean all and lock mode will block the bootloader, which will complicate future updates.

Solving typical firmware errors

Even if you follow the instructions accurately, you can have errors, and let's look at the most common ones and how to fix them.

If the phone does not turn on after firmware or hung on the Mi logo, try:

1. Press Volume up + Power for 10-15 seconds for forced reboot.
2. Repeat installing the firmware through Fastboot with a full reset (Clean all).
3. If nothing helps, contact Xiaomi’s support team with the model and error.

If after firmware there are problems with battery (fast discharge) or performance, perform the battery calibration:

1. Charge your phone to 100% and don’t turn off charging for another 1 hour.
2. Use your phone until it is fully discharged (0%).
3. Charge again to 100% without interruption.
4. Repeat the cycle 2-3 times.

💡

To avoid problems with Google services after firmware, immediately after setting up the device, update all applications through the Play Market and restart the phone.

FAQ: Frequent questions about Redmi firmware 9