Xiaomi Phone Flashing: A Complete Guide with Instructions and Warnings

Reflashing Xiaomi’s smartphone is a process that can dramatically change the way a device works: speed it up, add new features, or even bring the brick back to life after a failed update. However, without the right training and knowledge, this process can lead to serious consequences, from data loss to complete inoperability of the gadget. In this article, we will discuss all the stages of reflashing, from unlocking the bootloader to installing official and custom firmware, and also talk about hidden nuances that even experienced users do not know.

It’s important to understand that Xiaomi’s firmware is different from other brands’ devices, and it uses its own MIUI ecosystem, a closed bootloader, and unique tools like the Mi Flash Tool. Plus, you may lose warranty after flashing, and some features (like Google Pay or banking apps) may stop working. Before you start, assess the risks and prepare for the consequences.

This guideline is relevant for most Xiaomi, Redmi and POCO models released after 2018. Older devices (up to and including Mi 5) may have different processes, often requiring special versions of firmware and utilities. If your smartphone is older, check out the details for a particular model on profile forums like 4PDA or XDA Developers.

1. Preparation for flashing: what to do before the start

The first and most important step is preparation, and without it, even experienced users risk getting a brick instead of a work phone. Start with a backup of all the data: contacts, photos, messages and apps. Use Mi Cloud, Google Drive or local copying on a PC. Keep in mind that after you have firmware, the internal memory of the device will be completely cleared.

Next, check your device’s model and codename, which is critical, as the firmware for the Redmi Note 10 Pro (sweet) won’t work for the Redmi Note 10 (mojito).

• 📱 In settings: Settings → The phone. → Version. MIUI (several times tap on the line "Kornel version")
• 🔧 Through ADB: Connect your phone to your PC and type in the command adb shell getprop ro.product.device
• 🛠️ On the device box or under the battery (for models with removable battery)

Also prepare:

• 💻 Computer on Windows 7/10/11 (Mi Flash Tool is better to avoid macOS or Linux)
• 🔌 Original. USB-cable (cheap cables can interrupt the connection)
• 🔋 Battery charge of at least 60% (better than 100%)
• 📥 Firmware for your model (official or custom)

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If you are reflashing the POCO F3 or Xiaomi 11T Pro, download the firmware marked “Global” or “EEA” – they are optimized for the European region and contain all the necessary certificates for Google services.

2 Unlock the bootloader: without it anywhere

All modern Xiaomi smartphones come with a bootloader locked, a security measure that prevents unofficial software from being installed.

1. Link your Mi Account to your device (require to use the same account as your phone!).
2. Apply for unlocking through the official Mi Unlock Tool.
3. Wait 7-15 days (depending on the model and region).

The unlocking process:

1. Download Mi Unlock Tool from the official website.
2. Turn on the phone Developer Mode (7 times tap the MIUI version in the settings) and activate OEM-unlock and USB Debugging.
3. Connect your phone to your PC in Fastboot mode (clip Volume Down + Power when the device is off).
4. Launch the Mi Unlock Tool, log in to your Mi Account and follow the instructions.

Once the bootloader is unlocked, all data on the phone will be deleted, and Widevine protection will be removed. L1 (watcher HD-content from Netflix, Disney+ etc.) may decrease to L3. This is an irreversible process, so weigh the pros and cons.

Link Mi Account to your device|Turn it on. OEM-unlocking|Download Mi Unlock Tool|Prepare original USB-cable|Charge the phone to 100%-->

3. Selection of firmware: official vs custom

Once you unlock the bootloader, you have to decide which firmware to install.

For most users, the best choice is official global firmware (for example, MIUI Global Stable), which can be downloaded from the Xiaomi website.

• 📱 LineageOS – pure Android without unnecessary applications
• 🎨 Pixel Experience – The interface is like Google Pixel
• ⚡ ArrowOS – Balance between performance and functionality
• 🔧 Xiaomi.eu — MIUI without advertising and with European localization

4. Install official firmware via Mi Flash Tool

If you have chosen the official firmware, the most reliable way to install it is through the Mi Flash Tool.This method is suitable for recovering the device after a failure or installing a new version of MIUI.

1. Download the Mi Flash Tool from the official website and install it on PC.
2. Unpack the downloaded firmware (file with the extension.tgz or.zip) in a folder without Cyrillic characters on the way.
3. Turn off the phone and put it in Fastboot mode (clip Volume Down + Power).
4. Connect the device to your PC and start the Mi Flash Tool.
5. In the program, click Select and specify the path to the folder with the firmware.
6. Select firmware mode: Clean all - complete cleaning (recommended when changing the version of MIUI) Clean all and lock - cleaning + lock bootloader (only for official firmware!) Save user data - data storage (not always stable)

Flash

If the process is stalled at the Waiting for device stage, check:

• 🔌 Cable and port USB (Try another port or cable)
• 🖥️ Mi drivers installed USB Driver (can be downloaded here)
• 🔄 Restart your PC and phone, then try again.

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Use Clean All mode when switching from custom firmware to official MIUI. Otherwise, errors in the system, including problems with the sensor or Wi-Fi, may occur.

5. Install custom firmware through TWRP

To install custom firmware (for example, LineageOS or Pixel Experience) will require custom recovery – usually TWRP. the process is more complicated than with official firmware, and requires accuracy.

Step 1: Installation of TWRP

1. Download the image TWRP for your model from the official website (for example, for Redmi Note) 10 Pro, it's gonna be a file. twrp-3.7.0_12-sweet.img).
2. Transfer the phone to Fastboot mode and connect to the PC.
3. Open the command line in the folder with ADB Enter: Fastboot Flash Recovery twrp-3.7.0_12-sweet.img fastboot boot twrp-3.7.0_12-sweet.img

Step 2: Firmware through TWRP

1. Download firmware (e.g. lineage-20.0-20231010-nightly-sweet-signed.zip) and, if necessary, GApps (Google Services Package).
2. Move the files to your phone or flash drive.
3. In TWRP, run Wipe → Advanced Wipe and mark Dalvik / ART Cache System Data Cache

Install

GApps

arm64

Restart the device (the first start can take 10-15 minutes).

⚠️ Note: Some custom firmware requires additional patches to operate the camera or NFC. For example, for GCam on POCO X3 Pro needs to be flashed through a separate Magisk module. XDA.

6. Common mistakes and their solutions

Even with the correct following of the instructions, there can be problems, and here are the most common mistakes and ways to correct them:

If the phone stops turning on (the "brick"), don't panic. In 90% of cases, it can be restored:

1. Try going to Fastboot (Loudness Down + Power) and flashing the official firmware through the Mi Flash Tool.
2. If it doesn't help, use it. EDL-Mode (requires a special cable or box).
3. In extreme cases, contact the Xiaomi service center (but it can be expensive).

7.Optimization after firmware: what to do next

Once the firmware is successful, you need to configure the device.

• 🔄 Reset the settings to factory (if you were flashing over the old system). This will help avoid conflicts: Settings → Additionally. → Recovery and discharge.
• 🔒 Install Magisk for root rights (if needed). Download the latest version of Magisk from GitHub and run through TWRP.
• 📱 Configure Google Services: If you’ve been running custom firmware without GApps, install them via Open GApps or NikGApps.
• 🔋 Calibrate the battery: after firmware discharge the phone to 0% and charge to 100% without interruptions.

To improve productivity:

• Turn off animation: in Settings → About the phone tap 5 times on the MIUI version, then go to the developer settings and set Windows animation = 0.5x.
• Remove unnecessary applications via ADB: adb shell pm uninstall --user 0 com.miui.analytics
• Activate MIUI Optimization in the developer settings for smooth operation.

⚠️ Note: If you have installed Magisk, some banking applications (such as Sberbank Online or Tinkoff) may block access. To fix this, activate MagiskHide and add the applications to the hidden list.

8.How to return the official firmware and warranty

If you want to return the official MIUI after experimenting with custom firmware (for example, for warranty repairs), follow this instruction:

1. Download the stable official firmware for your model from the Xiaomi website.
2. Unpack it and run through the Mi Flash Tool in Clean all and lock mode. This will block the bootloader and remove all traces of custom software.
3. After firmware, reset to factory settings: Settings → Additional → Recovery and Reset.
4. Check the status of the bootloader command: fastboot oem device-info If the answer Device unlocked: false, the bootloader is blocked.

But keep in mind:

• 🔧 The warranty is not always restored - the service center can check the logs of the device.
• 📱 Some functions (such as Widevine) L1) They may stay on the level. L3 Even after returning to the official firmware.
• 🔒 If you have installed Magisk, remove it via Uninstall in the Magisk Manager menu before you install it.

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To increase the chances of warranty recovery, don’t use custom firmware for longer than 1-2 weeks. The less time the device has spent on unofficial software, the harder it is for the service center to prove your manipulation.

FAQ: Frequent questions about Xiaomi flashing