How to reflash Xiaomi phone at home: secure algorithm 2026

Reflashing the Xiaomi smartphone is a process that can radically change the operation of the device: speed it up, add new features or even bring back to life the “brick” after a failed update. But without proper preparation and knowledge of the nuances, this procedure could turn the phone into a useless piece of plastic. In 2026, firmware algorithms evolved: MIUI tightened control over downloaders, and custom firmware like LineageOS or Pixel Experience require mandatory unlocking through official channels.

This article doesn’t just recapture the general instructions – it’s a collection of up-to-date information based on the latest changes in Xiaomi’s policy (including the new Mi Account requirements), as well as step-by-step actions for different scenarios, from updating through Fastboot to installing it. GSI-We'll look at what models support alternative firmware, how to get around common bugs (like anti-rollback), and what to do if the phone doesn't turn on after the firmware is installed. The procedure is different for devices on Qualcomm Snapdragon and MediaTek – this will also be discussed.

1. Firmware Preparation: What to Do Before Starting

The first and most critical stage is preparation. Without a backup, an unlocked bootloader, and a properly selected firmware, the odds of success run to zero. MIUI: Go to Settings. → The phone. → Version. MIUI. Write down the full title (for example, MIUI Global 14.0.5 Stable – you will need it to select compatible firmware.

Mandatory steps before the firmware:

• 📱 Create a backup through Settings → Additionally. → Backup and reset or use TWRP (Manually copy photos, contacts and files to your PC – cloud services may not recover data after changing the firmware.
• 🔓 Unlock the bootloader through the official Mi Unlock Tool. Since 2023, Xiaomi has required the device to be linked to the Mi Account at least 7 days before unlocking.
• 💻 Install drivers: Download Mi Phone Manager or package for Windows ADB/Fastboot Drivers. Linux/macOS It is a package of android-tools-adb.
• 🔋 Charge the phone to at least 60%. interruption of the process due to battery discharge can lead to hard-brick (irreparable damage).

Pay special attention to the choice of firmware. MIUI Download files only from en.miui.com (Download section). XDA Developers or 4PDA, But check user reviews -- some builds may contain spyware or be unstable. GSI Wikis are suitable for universal GSI-Firmware, but their installation requires additional manipulations with the system and vendor partitions.

⚠️ Note: If your device was purchased in China (the C-suffix version in the model, such as the Redmi Note 12 Pro C), the firmware is global. MIUI This can block the network, and you'll need a patch to modify the modem partition.

2. Unlock the bootloader: bypassing the restrictions of Xiaomi

Since 2022, Xiaomi has tightened the process of unlocking the bootloader, now requiring:

1. Attach the device to the Mi Account (mandatory confirmed by email and phone).
2. Wait 168 hours (7 days) from the time of the peg, and this timer is reset when you change your account or reset your phone.
3. Use the latest version of the Mi Unlock Tool (you can download it on the official website).

Step-by-step:

1. Enable Developer Options: Go to Settings → About Phone and click on MIUI Version 7 times.
2. Activate Unlocking. OEM and debugging by USB on the Developer Menu.
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 program instructions. If the "Couldn't unlock" error appears, check if 168 hours have passed since the link.

Link Mi Account to your phone|Enable developer options|Activate “Unlocking” OEM"|Wait 7 days (168 hours)|Download the Mi Unlock Tool for the latest version-->

In some models (for example, POCO F5 or Redmi K60) When the bootloader is unlocked, it automatically resets to factory settings. All data will be deleted, so backup is mandatory. Also, note that unlocking will void the warranty, as stated in Xiaomi's user agreement.

⚠️ Note: If you bought the phone with your hands, make sure that the previous owner untie his Mi Account from the device. Otherwise, unlocking will be impossible without his participation (you will need to enter the login / password of the old account).

3. firmware selection: official MIUI vs custom builds

The decision on the type of firmware depends on your goals:

For official firmware, use the official portal. Choose the version that corresponds to your model and region (for example, Redmi Note 11 Global or the official version of the website). POCO X5 Pay attention to the code name of the device (for example, vili for Xiaomi 12 Lite) – it will be necessary to search for custom firmware.

For custom firmware, check the support of your model on XDA Developers or 4PDA. Popular options:

• 📱 LineageOS – pure Android with minimal improvements.

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Before installing custom firmware, check if it supports data encryption (FBE). If not, after firmware, the phone may not boot or lose access to internal memory.

4.Firmware methods: Fastboot, Recovery and ADB Sideload

There are three main Xiaomi firmware methods, each suitable for different scenarios:

Firmware via Fastboot (recommended for official MIUI)

This method is suitable for installing official firmware in.tgz or.zip format (for Fastboot) and completely erases data from the device, so backup is mandatory.

Instructions:

1. Download the firmware for your model (for example, vili_global_images_V14.0.5.0.TLIMIXM_20231010.0000.00_12.0_global_1234567890.tgz).
2. Unpack the archive in a folder with the Mi Flash Tool (you can download here).
3. Transfer the phone to Fastboot mode (clip Volume Down + Power).
4. Connect the device to your PC and launch the Mi Flash Tool. Press Select, select the folder with the unpacked firmware.
5. At the bottom of the program, select Clean All (Full Cleaning) or Clean All and Lock (Cleaning) mode. + loader-lock).
6. Press Flash and wait until it is completed (usually 5-10 minutes).

4.2. Firmware through TWRP (custom-fix)

TWRP (Team Win Recovery Project is a custom recovery that allows you to install informal firmware, backup and recover data.

How to install TWRP:

1. Download the image TWRP for your model from the official website (for example, twrp-3.7.0_9-0-vili.img).
2. Transfer the phone to Fastboot mode and connect to the PC.
3. Open the command line in the folder with ADB/Fastboot The command is: fastboot flash recovery. twrp-3.7.0_9-0-vili.img
4. Immediately after that, do: fastboot boot twrp-3.7.0_9-0-vili.img (This will load the phone into TWRP without rewriting the recovery section with official firmware).

Install custom firmware through TWRP:

1. Download the firmware (for example, lineage-20.0-20231010-nightly-vili-signed.zip) And put it on your phone or microSD.
2. V TWRP Choose the Wipe → Advanced Wipe and mark Dalvik, Cache, System, Data (if a complete cleanup is required).
3. Return to the main menu, select Install and specify the path to the firmware file.
4. After installing the firmware, it is recommended to flash Magisk (for root rights) or GApps (if they are not included in the firmware).
5. Reset the device.

4.3. Firmware through ADB Sideload (for updates without updates) TWRP)

This method is useful if you don’t have a custom recap, but you need to install the update in.zip format (for example, you need to install the update in.zip format, OTA-packet).

Instructions:

1. Download the firmware and place it in the folder with ADB PC-only.
2. Transfer the phone to Recovery Mode (clip Volume Up). + Nutrition).
3. From the Recovery menu, select Apply update → Apply from ADB.
4. On PC, execute the command: adb sideload name file.zip
5. Wait until the installation is complete (progress is displayed on the phone).

⚠️ Note: When you are running through ADB Sideload don't interrupt the process even if the progress bar on the phone is frozen — 5-15 Premature shutdown of the cable will lead to soft-brick (the phone will only be loaded in the recaverie).

5. 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 after firmware, the phone loads into an endless bootloop (cyclical reboot), try:

1. Load in TWRP clean Dalvik/Cache.
2. Freak through the core (boot.img) separately.
3. Install firmware without GApps (sometimes they conflict with the system).

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If the phone doesn't turn on and respond to buttons after firmware, don't panic. 90% In some cases, this is a soft-brick that is fixed by re-running through Fastboot. The main thing is not to turn the phone off of charging and try to boot into Fastboot mode. + Meals for food 10-15 seconds).

6. Firmware of devices on MediaTek: features and risks

Xiaomi phones on MediaTek processors (e.g. Redmi) 10C, POCO M5) They're wired differently than Qualcomm Snapdragon devices:

• 🔧 There's no regime. EDL (Emergency Download Mode, which is on Snapdragon and allows you to restore the bricks".
• 🔧 Drivers: MediaTek requires installation VCOM-driver and tool SP Flash Tool.
• 🔧 Unlocking the bootloader may require additional manipulations with DA-Download Agent (Download Agent).
• 🔧 Risk of damage IMEI If the network is incorrect, you can lose the network.

Instructions for MediaTek:

1. Download. SP Flash Tool and firmware in.scatter format (for example, with Xiaomi Firmware Updater).
2. Install. VCOM-Drivers (instructions are in the archive with the SP Flash Tool).
3. Launch the SP Flash Tool, download the scatter file and press Download.
4. Connect the phone to the PC – the program must detect it and start firmware.

⚠️ Note: On MediaTek devices, never flash the partition PRELOADER — This will lead to hard-brick damage. SP Flash Tool uncheck this section before starting the firmware.

If the phone doesn’t turn on after firmware, try:

• Switch only the boot and recovery section (without the system).
• Use a different version SP Flash Tool (e.g. 5.2 instead of 6.0).
• Check cable and port USB — MediaTek is more sensitive to connection quality.

7.What to do after firmware: setup and optimization

Once the firmware is successful, the device requires initial configuration.

Check the operation of sensors (gyroscope, accelerometer)|Set up a network (IMEI, mobile)|Update Google Services (if installed)|Check the camera and speakers|Install Magisk (if you need root)-->

If you have installed custom firmware, pay attention to:

• 📶 Mobile network: Some firmware requires manual input APN (Operator settings. Path: Settings → SIM-maps and mobile networks → Access points (APN).
• 🔊 Sound: If the speakers are quiet, check the settings mixer_paths.xml (You may need to edit through Magisk).
• 📷 Camera: Some models require additional modules (e.g., cameras, ANX Camera for GCam).
• 🔋 Battery: Calibrate the battery after firmware (discharge to 0%, then charge to 100% without interruption).

To improve productivity:

• Turn off animations in Developer Options (set the animation scale at 0.5x or off.).
• Use Magisk to install optimization modules (e.g. Universal SafetyNet Fix for SafetyNet).
• Set up the Thermal Engine (if available in firmware) to reduce overheating.

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If after firmware the phone discharges quickly, check the activity of processes through Settings → Battery → Battery use: Often the fault is Google's background services or faulty core modules.

8.Recovery after failed firmware

If your phone has turned into a brick, don't rush to bring it to the service. In most cases, you can restore the device yourself.

Scenario 1: Phone not turned on but defined in Fastboot

This is soft-brick, the easiest case.

1. Sweep through the official firmware through the Mi Flash Tool in clean all mode.
2. If the error repeats, try a different firmware version (e.g., an older or newer one).
3. Check the integrity of the cable and port USB — Sometimes the problem is poor contact.

Scenario 2: Phone does not respond to buttons, is not determined by PC

This is a hard-brick case, but it's not always a hopeless one.

• 🔌 Close Testpoints (for Qualcomm): Some models (for example, Redmi Note 10 Pro) can be entered into mode EDL, You can close the contacts on the board.
• 🔌 Using boxing (such as UFi Box or EasyJTAG) is professional equipment, but some services offer recovery services through the use of a box. EDL.
• 🔌 Contact the service: if the phone is warranty, do not talk about firmware attempts - this will cancel the warranty.

Scenario 3: The phone turns on but loads into a bootloom

Reasons:

• Incompatible nucleus (boot.img).
• The damaged system section.
• GApps conflict with firmware.

Decisions:

1. Boot in. TWRP and clean Dalvik/Cache.
2. Flip the firmware without GApps.
3. Install an alternative core (e.g., FrancoKernel for your model).

FAQ: Answers to Frequent Questions