How to reflash Xiaomi Redmi: official and alternative ways

Reflashing Xiaomi Redmi is a process that can dramatically change the way a device works, from eliminating system bugs to installing custom builds with advanced features. However, the wrong actions lead to “bricking” (turning into a “brick”), loss of warranty or unstable work. This article will help you understand when firmware is really necessary and when it is better to get by with a standard update through Settings.

The manufacturer offers two official upgrade paths: OTA (over the air) and Mi Flash Tool for manual installation. But enthusiasts often choose custom firmware like LineageOS or Pixel Experience to get a pure Android without the MIUI shell. We will detail each method, point out the pitfalls and give recommendations for choosing firmware for specific models of the Redmi Note 12, Redmi 10 or POCO X5.

When to re-flash and when to update enough

Many users confuse system upgrades with complete firmware reflashing. One is installing security patches and minor improvements through the Settings menu → About phone → System upgrade. The second involves a complete software replacement, which requires three cases:

• 🔄 System glitches: the phone is constantly rebooting, apps are crashing, and factory resets don't help.
• 🚀 Desire to get new features: for example, upgrade from MIUI 12 to MIUI 14 on an unsupported model.
• 🛡️ Bloatware Removal: Getting rid of pre-installed Chinese apps (e.g. Mi Browser or Mi Video).

If your goal is simply to fix minor bugs or get the latest security patches, a standard update is sufficient.

• 📱 The device is not officially getting updates (e.g. Redmi 8 after 2023).
• 🔓 You need to unlock additional features (for example, root access for Magisk).
• 🎯 Specific firmware is required (e.g. Global). ROM China ROM for the operation of Google services).

⚠️ Warning: Firmware through unofficial sources will void the warranty Xiaomi.If the device is warranty, first check whether the problem can be solved through the service center.

Preparation for firmware: backup and unlock the bootloader

Before any firmware manipulation, be sure to save all data. Even the official firmware through the Mi Flash Tool erases user files.

• 📱 Local Copying: Transfer photos, videos and documents to a PC or external drive.
• ☁️ Cloud services: sync contacts, notes and photos with Google Drive or Mi Cloud.
• 🔐 Export settings: Save SMS through apps SMS Backup & Restore.

The most critical step is to unlock the bootloader. Without this, you can not install custom firmware or official through Fastboot. Xiaomi requires confirmation of the Mi Account and waiting up to 720 hours (30 days) for new devices.

1. Link your Mi Account to your phone in Settings → Xiaomi Account.
2. Activate USB debugging: Settings → About Phone → MIUI version (click 7 times), then Settings → Additional → For Developers → Debugging over USB.
3. Connect your phone to your PC, install the Mi Unlock Tool, and watch the unlock timer.

⚠️ Note: If you bought a phone with your hands, the previous owner could have linked his Mi Account, in which case unlocking without his data is impossible - you will need to contact the service center.

Make a backup copy of the data |

Check the battery charge (minimum 60%) |

Install Xiaomi drivers on PC|

Download the firmware for your model |

The loader is unlocked (if necessary)-->

Official Firmware Methods: OTA and Mi Flash Tool

If you don’t plan to install custom firmware, use official methods. They are safe and do not require unlocking the bootloader (except in cases of downgraded versions).

1. Air Update (OTA)

The easiest way is through the Settings menu → About Phone → System Update. The system will automatically find the current firmware for your model.

• ✅ No PC and technical skills required.
• ✅ Stores user data (unless otherwise stated).
• ✅ Suitable for regular security updates.

Disadvantages: The latest versions for older models are not always available, and major upgrades (e.g., from MIUI 13 to MIUI 14) may require cache pre-cleaning.

2. firmware via Mi Flash Tool

This method is needed if:

• 📥 Oh.TA-No updates are available (for example, on Redmi). 9A China ROM).
• 🔄 Requires a rollback to the previous version (downgrade).
• 🚨 The device does not turn on (need firmware in Fastboot mode).

Instructions:

1. Download the Mi Flash Tool from the official Xiaomi website and the firmware for your model (file with the extension.tgz or.zip).
2. Unpack the firmware archive into a folder without Cyrillic characters (e.g., C:\Xiaomi\ROM).
3. Turn off the phone, press Volume Down + Power to log into the Fastboot.
4. Connect the device to your PC, launch the Mi Flash Tool, select the firmware folder and press Refresh → Flash.

💡

If the Mi Flash Tool gives you a “Couldn’t find device” error, install Xiaomi USB Drivers manually through Windows Device Manager (select “Update Driver” → “Search on this computer” → specify the driver folder).

Install custom firmware: LineageOS, Pixel Experience and others

Custom firmware gives you access to pure Android, regular updates and additional features, but requires unlocked bootloader and root access.

• 📱 LineageOS: as close as possible to the stock Android, stable, but without branded chips Xiaomi.
• 🎯 Pixel Experience: Google Pixel interface, Now Playing and other exclusives.
• ⚡ ArrowOS: Balance between customization and performance.
• 🔧 Havoc-OS: for fans of fine-tuning (many themes and modules).

Installation process:

1. Unlock the bootloader (see section above).
2. Install custom recovery (TWRP or OrangeFox) via Fastboot: fastboot flash recovery twrp.img fastboot boot twrp.img
3. In TWRP, run Wipe → Advanced Wipe (select Dalvik, Cache, System, Data).
4. Install firmware (Install) and, if necessary, GApps (Google services).

⚠️ Note: Some custom firmware does not support Widevine L1, That's why Netflix and other services will be running in low resolution. XDA Developers.

Common mistakes and their solutions

Even if you follow the instructions, you can have problems, and here are the most common ways to fix them:

If your phone has turned into a brick (it doesn’t turn on, doesn’t respond to buttons), try:

1. Press Volume up + Power for 10-15 seconds for forced reboot.
2. Connect to your PC and try flashing through the Mi Flash Tool in EDL mode (requires an authorized account).
3. Contact the service center if independent attempts did not help.

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90% of firmware problems are caused by incompatibility of the firmware with the device model or missed steps (for example, forgetting to unlock the bootloader).

How to Choose a Firmware for Your Redmi Model

The wrong firmware is the main reason for the bricking.

1. Check the model code: go to Settings → About Phone → Model. For example, the Redmi Note 11 Pro+ 5G has the code veux, and the Redmi 10 is selene.
2. Choose the type of firmware: 🌍 Global ROM: International versions (supported by Google Services). 🇨🇳 China ROM: Google-free, but with Chinese services (can be converted to Global). 🛠️ Developer ROM: Testing new functions (may be unstable).

Check out the Android version

LineageOS 20

To search for firmware, use official sources:

• 🔗 Official website MIUI — stock-fixer.
• 🔗 XDA Developers – for custom builds (look for your model theme).
• 🔗 Xiaomi Firmware Updater – for current firms.

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If you’re a beginner, start with the official Global Stable ROM. Custom firmware requires expertise and often has bugs (like a broken NFC or camera).

Recovery after a failed firmware

If something goes wrong, don't panic. In most cases, the phone can be resuscitated.

1. Try logging in to Recovery: Press Volume Up + Power when your phone is off. If MIUI Recovery boots, select Wipe Data and restart.
2. Use Fastboot: If your phone is detected by a PC in Fastboot mode (check through the fastboot device command), run the stock firmware through the Mi Flash Tool.
3. EDL mode: If the device does not respond, you will need firmware via EDL (you need an authorized Xiaomi account or firmware box).

If nothing works, go to the service center.

• What firmware they tried to install.
• At what stage did the mistake occur?
• What manipulations have you tried before.

⚠️ Warning: Some service centers refuse to restore devices after unofficial firmware.

FAQ: Frequent questions about Xiaomi Redmi firmware