Reflashing Xiaomi Redmi Note 7 via Fastboot: full instructions with nuances

The Xiaomi Redmi Note 7 remains a popular smartphone even years after its release, but over time, owners face the need to reflash the device, for reasons ranging from wanting to install a fresh version of the MIUI to having to restore the brick-and-brick device. Fastboot firmware is one of the most reliable methods, but it requires care and preparation.

Unlike an Ota or Recovery update, Fastboot allows you to flash even versions of software that are not available “over the air.” But there are pitfalls here, from the mandatory unlocking of the bootloader to the risk of turning the phone into a “brick” if you do not do it correctly. In this article, we will examine the process from A to Z – with current data for 2026, taking into account changes in Xiaomi policy and solutions to typical errors.

If you’ve never flashed a smartphone through Fastboot, don’t worry: the manual is tailored for beginners, but with technical details for experienced users.

Preparation for firmware: what to do before the start

Fastboot firmware is not a push-button and forget. There are a few critical steps you need to take before you start the process to avoid data loss or damage to your device. Here is a checklist of mandatory preparations:

• 🔋 Charge the smartphone to at least 60%. When discharged during firmware, the Redmi Note 7 may turn off, which will lead to a software failure.
• 📱 Backup all the data. Fastboot firmware completely erases internal memory (unless you use special commands). Mi Mover, Google Photos or manual copying on PC are suitable for backup.
• 🖥️ Install drivers and tools. You will need Mi Flash Tool (official utility from Xiaomi), ADB/Fastboot drivers and, where appropriate, Qualcomm USB Drivers.
• 🔓 Check the status of the bootloader. If it is locked (which is typical for new devices), it will have to be unlocked through the Mi Unlock Tool.

Special attention is paid to the choice of firmware. For Redmi Note 7 (codename lavender) there are:

• 📦 Official firmware MIUI — stable and beta versions from en.miui.com.
• 🛠️ Custom firmware (for example, LineageOS, Pixel Experience) – for experienced users, requiring an unlocked bootloader and additional manipulations.
• 🔄 Downgrade firmware - if you need to roll back to an older version MIUI (for example, MIUI 14 on MIUI 12).

Important: Fastboot firmware for Redmi Note 7 with a locked bootloader is not possible - you first need to unlock through Mi Account. If you miss this step, Mi Flash Tool will give an error "This device is locked."

Unlocking the bootloader on Redmi Note 7: step-by-step guide

The Xiaomi Redmi Note 7 bootloader is locked by default, a security measure, but it also complicates the firmware. It takes 3 to 360 hours to unlock (depending on Xiaomi policy) and requires the device to be linked to the Mi Account.

1. Activate. OEM Unlock and Debugging by USB: Go to Settings. → The phone. → Version. MIUI and tap 7 times on the line to activate Developer Mode. → Additionally. → For developers and include: 🔓 OEM Unlock (unlocking the bootloader) 🖥️ Debugging by USB

Attach the device to the Mi Account:

• In Settings → Xiaomi account, log in to your profile (or create a new one).
• In For Developers, find the Mi Unlock Status item and link the device to your account.
• Download Mi Unlock Tool from the official website and run the utility on PC.
• Connect the Redmi Note 7 to your computer in Fastboot mode (press Power + Volume down when the phone is off) and follow the program instructions.

After submitting a request to unlock, Xiaomi may require waiting from a few hours to 15 days.The status of the verification can be tracked in the Mi Unlock Tool. If the process is delayed, try:

• 🔄 Reconnect the device to another USB-port (preferably) USB 2.0).
• 📡 Use a different cable (original from Xiaomi is preferable).
• 🌐 Trying a different Mi Account (sometimes helps).

⚠️ Note: If you bought a Redmi Note 7 used, the previous owner could not untie the device from his account. In this case, unlocking is impossible without his participation – you will have to contact Xiaomi with proof of purchase.

Firmware selection: official MIUI vs custom builds

From the choice of firmware depends not only the functionality, but also the stability of the Redmi Note 7. MIUI They guarantee compatibility with iron, but often contain advertising and restrictions. Castom firmware (e.g. AOSP-based) lacks these flaws, but may have bugs or not support some features (e.g., AOSP-based, IR-blaster NFC).

Where to download firmware:

• 📦 Officially MIUI: en.miui.com (select the version for lavender).
• 🔗 Custom firmware: XDA Developers or community telegram chats.
• 🔄 Archival versions MIUI: Xiaomi Firmware Updater.

⚠️ Note: The firmware for the Redmi Note 7 Pro (codename violeta) is incompatible with the Redmi Note 7 (lavender)! Installing the inappropriate software will lead to hard brick (irreparable damage).

Download firmware for the Lavender model|Unpack. ZIP-file-box|Check the integrity of the files (are there any errors in unpacking)|Download the latest Mi Flash Tool version-->

Installation of Mi Flash Tool and firmware via Fastboot

When the firmware is downloaded, the bootloader is unlocked, and the backup is done, you can start the firmware. This will require the Mi Flash Tool, which runs only on Windows (for Linux/macOS there are alternatives like fastboot manually).

1. Install the Mi Flash Tool (download here). When installing, choose a path without spaces and Cyrillic characters (e.g., C:\MiFlash).
2. Unpack the firmware archive in a folder. flash_all.bat (for full firmware) or flash_all_except_storage.bat (unless you want to erase the data).
3. Turn off the Redmi Note 7 and turn to Fastboot: 1. Press the Power button + Volume down for 10 seconds. 2. Connect your phone to your PC via USB-3. Wait for the Fastboot logo to appear).
4. Launch the Mi Flash Tool, press Select and specify the path to the firmware folder. The device should be determined in the list (if not, check the drivers).
5. Select firmware mode: Clean all – complete cleaning and firmware (recommended). Clean all and lock – firmware with bootloader lock (only for official MIUI!), Save user data – firmware without data cleaning (risky, can lead to bugs).

Press Flash and wait until the process is complete (usually 5-10 minutes).

If it's a success, you'll see the word "success" in the Mi Flash Tool. It can take up to 15 minutes to download the first firmware after you've done it -- don't interrupt it!

1. Reinstall Qualcomm drivers.

2. Use another USB-cable (preferably original).

3. Run the utility on behalf of the administrator.-->

Solving common errors in firmware

Even with the exact instructions, errors can occur, and here are the most common problems and solutions for the Redmi Note 7:

If the Redmi Note 7 is stuck on the MI or Fastboot logo after the firmware, try:

1. Wait 15-20 minutes (sometimes the first load is long).
2. Reset settings via Recovery: 1. Press Power + Volume up to log in to Recovery. 2. Select Wipe Data → Wipe All Data. 3. Reboot the device.
3. If it doesn’t work, clean it all up again.

⚠️ Note: If you have flashed custom firmware and the phone is not loading, check if it supports your anti-rollback version. For example, you can not flash LineageOS 18 on Redmi Note 7 with a bootloader from the same name. MIUI 12 is going to lead to a brick.

Firmware custom firmware (AOSP, LineageOS, Pixel Experience)

If the official MIUI doesn't suit you, you can install custom firmware. Redmi Note 7 is popular:

• 📱 LineageOS – pure Android without unnecessary applications.
• 🎨 Pixel Experience – firmware with the interface and features of Google Pixel.
• 🔧 Havoc-OS or crDroid – customizable builds with advanced settings.

The process of installing custom firmware is different from the official:

1. Unlock the bootloader (see section above).
2. Install custom Recovery (e.g. OrangeFox or TWRP): fastboot flash recovery orangefox-recovery.img fastboot reboot recovery
3. In Recovery, make Wipe → Format Data (required!).
4. Sweat firmware and GApps (if you need Google services): 1. Select Install → Select ZIP and specify the firmware file. 2. Repeat for GApps (such as Open GApps). 3. Reboot the device.

After installing custom firmware:

• 🔧 Set up root access (via Magisk) if required.
• 📡 Check your mobile network, Wi-Fi and camera (sometimes you need additional patches).
• 🔋 Calibrate the battery (discharge to 0% and charge to 100% without interruption).

Recovery after a failed firmware (unbrick)

If the Redmi Note 7 stopped turning on after the firmware ("bricked"), do not panic - in most cases it can be restored.

• 🟢 Soft brick (phone turned on but got stuck on logo or loaded into a phone) Fastboot/Recovery): Repeat the firmware through Fastboot with a complete clean (Clean all). Use Recovery to reset settings (Wipe Data).
• 🔴 Hard brick (phone not responding to buttons, not determined by PC): Try logging in EDL-mode (emergency boot mode) using a test point on the board or a special cable. Use the Mi Flash Tool in mode EDL (Requires an authorized Xiaomi account.Call the service center if you don't have soldering experience.

For recovery through EDL:

1. Download firmware in.tgz format for EDL (for example, with Xiaomi Firmware Updater).
2. Connect your phone to your PC in EDL mode (this may require a circuit of contacts on the board or a special cable).
3. In the Mi Flash Tool, select the downloaded firmware and press Flash.

⚠️ Attention: Recovery through EDL without an authorized Xiaomi account (for example, through unofficial tools like XiaoMiTool) V2) It may lead to a blockage. IMEI! Use this method only as a last resort.

💡

If the Redmi Note 7 doesn’t turn on after you’ve run the firmware, try flashing the official MIUI through the Fastboot with a full cleanup first, which solves the problem 90 percent of the time without going to the service.

FAQ: Answers to Frequent Questions