The firmware of the Xiaomi Redmi Note 7 (codename lavender) with a locked bootloader is a task that requires not only technical skills, but also an understanding of the risks. Factory bootloader lock on Xiaomi devices is introduced to protect against unauthorized access, but often becomes an obstacle for users who want to install custom firmware, obtain root rights or restore a “brick” after a failed update. Unlike models with an unlocked bootloader, you can not just download a fastboot and flash the image – you will need official permission from Xiaomi or workarounds.
In this article, we will discuss all the current methods of firmware for Redmi Note 7 with a locked bootloader: from official unlock through Mi Unlock Tool to alternative methods using the use of the device. EDL-We will pay special attention to the nuances that are often missed in standard instructions: working with a Mi Account account, choosing firmware versions (Global, China, EEA), It's also a device recovery system, if you've never encountered a firmware through a fastboot or EDL, Start with the section on preparation – it will save hours on correcting errors.
1.Why is the bootloader locked and can it be unlocked?
The bootloader on the Xiaomi Redmi Note 7 is blocked by the manufacturer by default.
- 🔒 Prevents the installation of unofficial firmware that may contain malicious code.
- 🛡️ Protects user data when stealing a device (without unlocking it is impossible to reset a password via fastboot).
- 📱 Ensures stable operation of the company software MIUI (Custom firmware can disrupt Xiaomi optimization).
However, blocking causes problems in the following cases:
- 🔄 The device “buried” after a failed update and does not turn on.
- 📥 We need to set up a Global. ROM Chinese version of the smartphone (or vice versa).
- 🔧 You need root rights to deeply configure the system.
- 🛠️ It is necessary to restore efficiency after failure EMMC-memory.
Xiaomi officially allows you to unlock the bootloader through the Mi Unlock Tool utility, but with a number of restrictions:
| Conditions | Xiaomi's requirement | Bypass |
|---|---|---|
| Account binding | The device must be tied to the Mi Account for at least 7 days | Use it. EDL-Authorized account mode |
| MIUI version | Official assembly only (not custom) | Reverse to stock firmware via fastboot |
| Frequency of unlocking | No more than 1 time in 30 days for one account | Create a new account or use an EDL |
| Status of the device | It must be activated and loaded into the system. | For bricks, only EDL or service center |
⚠️ Attention: Unlocking the bootloader through the Mi Unlock Tool resets the device to factory settings. If the smartphone has data encryption enabled, after unlocking all files will be irrevocably deleted. Backup must be done before the procedure begins.
2.Preparation for unlocking: what to do before the firmware
Before you start unlocking or firmware, make sure that all the preliminary steps are followed, and skipping at least one item can lead to data loss, account locking, or the inability to restore the device.
Backup data (photos, contacts, messages)| Check the MIUI version in Settings → About Phone | Connect the device to a stable power source (at least 60% charge) | Make sure that the PC has ADB/Fastboot and Qualcomm drivers installed on its model (lavender) | Download | Disable Find My Device and Mi Cloud Sync in the account settings | Enable OEM Unlock and USB Debugging in Settings →
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Pay special attention to the firmware versions. Redmi Note 7 can not install firmware from another model (for example, from Redmi Note 7 Pro), even if they look similar.
- 📱 In working device: Settings → The phone. → Version. MIUI (press several times on "Keep Version").
- 💻 In fastboot mode: connect your phone to your PC and type in the command fastboot getvar product
If your device is not turning on (called a "brick"), you can identify the model by the label under the battery cover or on the box. EDL-You will need an authorized Mi Account with a device-linked connection. If the account was not linked in advance, restore access to the device. EDL It's very difficult.
Unlocking with Mi Unlock Tool|Firmware through EDL-regime|Installation of custom recaveri (TWRP)|Recovery through the Service Center|Another method-->
Method 1: Officially unlock the bootloader via the Mi Unlock Tool
This is the most secure and recommended Xiaomi method, but it only works if the device is turned on and you have access to the Mi Account tied to the phone for at least 7 days.If these conditions are not met, go to the next section (Method 2: EDL-regime).
Step-by-step:
- Download the Mi Unlock Tool (Windows version) and install it on PC.
- Turn it on on your smartphone. OEM Unlock and USB Debugging: 📱 Go to Settings. → About the phone and 7 times click on "Version" MIUI", to activate the Developer Mode. 🔧 Back to Settings → Additionally. → For developers, include both items.
Connect the Redmi Note 7 to your PC via USB and launch the Mi Unlock Tool. log in to the same Mi Account that is tied to the device.
The utility will check the lock status. If everything is okay, press Unlock. It takes 1-3 minutes.
After unlocking, the device will automatically restart and reset to factory settings.
If the utility gives an error "Couldn't unlock" or "Current account is different from the account info on the device", check:
- 🔹 Does the account match on PC and phone.
- 🔹 Is it 7 days since the account was linked (checked in Settings) → Mi Account → Status of device).
- 🔹 Has this account been used to unlock another device in the past 30 days.
⚠️ Note: After the official unlocking of the bootloader, the Xiaomi warranty on the device is canceled, and some features (such as Mi Pay or Find My Device) may not work properly. If you are interested in a warranty, consider alternative ways to run your firmware without unlocking (for example, through fastboot with official firmware).
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Official unlocking via Mi Unlock Tool is the only method that does not require deep technical knowledge, but only works if all Xiaomi conditions are met (account binding, working device, official firmware).
4. Method 2: Firmware through EDL-mode (for "bricks" and without unlocking)
EDL (Emergency Download Mode is an emergency boot mode that allows you to flash a device even with a locked bootloader and without a working system. It is used in Xiaomi service centers, but is also available to ordinary users with an authorized account) EDL-The mode requires a firehose file, which Xiaomi does not officially distribute.
Advantages of the method:
- ✅ Works on "dead" devices (not included, stuck on the logo, bootloop).
- ✅ Does not require unlocking the loader.
- ✅ Allows you to restore the device after a failure EMMC or damage to the system partition.
Tools required:
- 💻 Windows PC (Qualcomm Drivers) HS-USB QDLoader 9008).
- 🔌 Cable USB (preferably original).
- 📁 Firmware in.tgz or.zip format for lavender.
- 🔑 Firehose or auth login file for Redmi Note 7.
- 🛠️ Mi Flash Tool or QFil.
Step-by-step:
- Transfer the device to EDL-regime: 🔌 Turn off the phone. 🔧 Press the buttons Volume up + Volume down and connect the cable USB PC. 💻 In Device Manager should appear Qualcomm device HS-USB QDLoader 9008.
Install drivers for QDLoader (you can download here).
Unpack the firmware and the authorization file into one folder. For the Mi Flash Tool, the structure should look like this:
firmware/
├── flash_all.bat
├── images/
│ ├── boot.img
│ ├── system.img
│ └── ...
└── firehose_lavender.mbn (authorization file)Run the Mi Flash Tool, select the firmware folder, and press Refresh. The device must be determined.
Press Flash and wait for the process to be completed (5-10 minutes).
⚠️ Note: Using unofficial firehose files may result in blocking IMEI Authorization files for Redmi Note 7 are often distributed in closed communities (for example, on the Internet). 4PDA or XDA Developers, but their legality is questionable. Xiaomi may block an account for using such files.
What if the Mi Flash Tool says Flash is not allowed in Lock State?
5. Method 3: Firmware via fastboot (for unlocked bootloader)
If you were able to unlock the bootloader (through the Mi Unlock Tool or other methods), you can flash the Redmi Note 7 through fastboot mode.
- 📲 Installation of official firmware (Global, China, EEA).
- 🔄 Recovery after failure (e.g. bootloop).
- 🔧 Custom recaveri installations (TWRP) custom-stamp ROM.
Step-by-step:
- Download the official firmware for lavender from Miui Download. Choose the version of Fastboot (file with the extension.tgz).
- Unpack the archive in a folder on your PC. flash_all.bat.
- Transfer the device to fastboot mode: 🔌 Turn off the phone. 🔧 Hold the Loud down. + Power before the appearance of the Fastboot logo.
Connect the device to the PC and start flash_all.bat. The process will take 3–5 minute.
Once completed, the phone will automatically restart. The first turn on can take up to 10 minutes.
If you want to install custom firmware (such as LineageOS or Pixel Experience), after unlocking the bootloader, you need to:
- Switch TWRP Recovery to fastboot:
- In TWRP, make Wipe → Format Data (required!).
- Install ZIP-file-based.
For Redmi Note 7 models with damaged EMMC-memory (symptoms: constant failures, inability to write data) can help to replace the memory chip. This is an expensive procedure (from 3000 rubles), which is justified only for devices with important data.
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If you're not sure about your skills, you should go to a service center, and the wrong firmware can turn your smartphone into a useless brick, which will cost more to repair than buying a new device.