Updates MIUI Xiaomi Redmi Note 7 (codename lavender) often brings not only new features, but also bugs: from battery discharge overnight to critical lags in the interface. If after the upgrade, the smartphone began to brake, overheat or completely stopped turning on - a rollback to the previous version of the firmware may be the only solution. However, the process requires caution: improper actions will lead to data loss, a bootloader block or even a "brick".
In this article, we have 3 proven kickback methods (including official and informal), analysis of typical errors and tips for saving user data. We wonβt use generic phrases like βfollow the instructions carefullyβ but instead weβll look at the specific risks to the Redmi Note 7 and how to avoid them. MIUI 14 on MIUI 12 can block IMEI, And how to prevent it from happening.
Let us warn you right away: if your smartphone is purchased in China (version for the market of China) ROM), The algorithm will be different from the global version (Global) ROM). This is due to Xiaomi's policy of locking the bootloader on Chinese devices.Clarify the model in the settings along the Settings path β The phone. β Version. MIUI β This will be the assembly (for example, V14.0.2.0.TFGCNXM china-fix).
It is also important to understand the difference between a pullback and a downgrade:
- π Recoil β Return to the previous version within the same branch MIUI (for example, MIUI 13.0.5 at MIUI 13.0.2) Risks are minimal, data can be stored.
If your goal is simply to fix the bugs of the latest update, try resetting the cache through Recovery first (the method is described in the section below).
1.Preparation for rollback: what to do before the procedure begins
The first step is to save data. The rollback of firmware on the Redmi Note 7 almost always results in a reset of user files, even if you choose the method without formatting.
For backup, use:
- Mi Cloud: Go to Settings β Mi Account β Mi Cloud β Backup. Minus is a limitation. 5 GB on a free account.
- Google Drive: In Settings β System system β Backups enable copying of Google data.
- Local copy: connect your smartphone to your PC and manually copy folders DCIM, Downloads and Android/data (play-saving).
The second critical point is to check the status of the bootloader. On the Redmi Note 7 with a locked bootloader, you can't roll back through the Fastboot without officially unlocking it.
fastboot oem device-infoIf the answer is Device unlocked: false, the bootloader is locked. Unlocking takes up to 720 hours (30 days) of waiting after the Mi Account is linked to the device.
Make a backup copy of the data|Check the version. MIUI region (Global/China)|Find out the status of the loader (locked/unlocked)|Download the right firmware for your model|Charge your phone at least to 60%-->
2. Method 1: Recovery (without computer)
The easiest way to return the previous version MIUI β It's a built-in Recovery. It's suitable if you want to use it:
- β You've been updated by air" (OTA) You want to go back to the same place (for example, with the MIUI 13.0.6 at 13.0.4).
- β You do not have a bootloader blocked (otherwise Recovery will not allow you to install the old firmware).
- β You agree to the reset of user data (in some cases, it is possible to save it).
Step-by-step:
- Download the full firmware package (not OTA!) for your model from the official website MIUI For Redmi Note 7, choose files marked with lavender and the extension.tgz or.zip.
- Rename the file to update.zip and move it to the root folder of internal memory (not to Download or MIUI!).
- Turn off the phone. Press the volume up. + Powering before the Mi logo appears β this will trigger Recovery.
- In the Recovery menu, select Install. update.zip to System One (use volume buttons for navigation, power button for confirmation).
- Once installed, select Reboot to System One. The first run will take 5-10 minutes.
β οΈ Note: If the phone has been stuck on the Redmi logo for longer than 15 minutes after the reboot, then the firmware is incompatible with your version of the bootloader).
How to save data? In some cases, Recovery allows you to roll back without formatting if you choose the option Install. update.zip without wiping data. However, this option only works when rolling back to neighboring versions (for example, with the help of a new version). 13.0.5 on 13.0.4). For a downgrade to an old branch (for example, with MIUI 14 on MIUI 12) discharge is mandatory.
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If the error "Can't verify update" appears in Recovery, try renaming the firmware file to update.zip And reset the setup. Also check the checksum (MD5) downloaded file β it must match the specified on the Xiaomi website.
Method 2: Recoil through Fastboot (for power users)
Fastboot is the most reliable, but it's also the most risky, and it's suitable for:
- β Downgrade to the old wicket MIUI (for example, MIUI 14 on MIUI 12).
- β Restore the phone after a failed update ("brick").
- β Install custom firmware (for example, Pixel Experience).
What you need:
- π₯οΈ Windows computer (or Linux/macOS driverless ADB/Fastboot).
- π Cable USB Type-C (preferably original).
- π¦ Fastboot firmware in.tgz format (download from Xiaomi Firmware Updater).
- π Unlocked bootloader (if not, read the section below).
Step-by-step:
- Unpack the downloaded firmware archive into a folder on your computer. flash_all.bat (for Windows or flash_all.sh (for Linux/macOS).
- Turn off the phone and press the volume down. + Power to enter Fastboot mode. Connect your smartphone to your PC.
- Launch the file. flash_all.bat I'll start the firmware process. 5β15 minute).
- Once completed, the phone will automatically restart. The first run can last up to 20 minutes.
β οΈ Note: If you are going to pull back from MIUI 14 on MIUI 12 or lower, the probability of loss is high IMEI and the serial number of the module Wi-Fi/Bluetooth. To avoid this, save modem and nvram partitions with the command before firmware:
fastboot dump modemst1 modemst2And reclaim them after the rollback:
fastboot flash modemst1 modemst1.img
fastboot flash modemst2 modemst2.imgHow to unlock a bootloader? Xiaomi locks the bootloader on all devices released after 2018.
- Link your Mi Account to your phone in Settings β Mi Account.
- Connect to Wi-Fi and send a request to unlock through the official website.
- Wait. SMS with confirmation (usually 1-3 days, but may take up to 30 days).
- Download Mi Unlock Tool, log in to your account and follow the program instructions.
What if Fastboot canβt see the phone?
Method 3: Use MIUI Downgrader (automated method)
For users who donβt want to understand Fastboot and Recovery, thereβs a semi-automatic tool β MIUI Downgrader. It's a Python script that downloads the firmware itself and flashes it through Fastboot:
- π€ Automatic selection of compatible firmware on the model.
- π‘οΈ Checksum verification (MD5) before installation.
- π Support for Downgrade between Major Versions MIUI (for example, 14 to 12).
How to use:
- Download. MIUI Downgrader with GitHub and unpack the archive.
- Install Python 3.8+ And add it to the environment variables (PATH).
- Connect your phone in Fastboot mode (as in method 2).
- Run downgrade.py and follow the instructions in the console.
β οΈ Attention: MIUI Downgrader does not work with a blocked bootloader! Also, the tool does not guarantee the safety of data - make a backup copy before using it.
Alternative for Windows: XiaomiTool V2. It has a graphical interface and supports one-click firmware rollback. XDA Developers.
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MIUI Downgrader and XiaomiTool V2 Use them at your own risk, especially if you have a Chinese version of the Redmi Note 7 (lavender).
5. Typical errors and how to fix them
Even with the exact following of the instructions, there can be problems.
| Mistake. | Reason. | Decision |
|---|---|---|
| Invalid sparse file format at header | A firmware file or incompatible version is damaged. | Download the firmware again and check it out. MD5. Use only official sources. |
| This package is for "lavender" devices; this is a "" | The firmware is not suitable for your model. | Check the deviceβs code name (lavender for Redmi Note 7) and download the correct version. |
| The phone will not turn on after rollback ("brick") | Incompatibility of the loader and firmware. | Swipe your phone through Fastboot using a file flash_all_lock.bat (if it's in the archives). |
| Loss of IMEI or serial number | Back on the old branch MIUI modem-free backup. | Restore. modemst1 and modemst2 from the backup (see the section about Fastboot). |
| Anti-rollback check fail | Trying to install a firmware that is too old. | Use firmware no older than 2-3 versions of the current one. MIUI 14 can roll back on MIUI 13.0.6, but not on MIUI 12. |
If your error is not listed in the table, check the firmware logs. For this, use the command in Fastboot:
fastboot getvar allLook for lines with bootloader, secure and verified β they will indicate a problem with the bootloader or firmware signature.
6.How to avoid problems after a rollback
After a successful firmware rollback, follow a few steps to keep the phone running smoothly:
1. Reset to factory settings
Even if the data is preserved, it is recommended to make a hard reset:
- Go to Settings β About the phone β Reset settings.
- Choose to erase all data and confirm.
- After restarting, set your phone as new.
2. disabling automatic updates
So Xiaomi doesnβt have to install a problem update again:
- Go to Settings β About the phone β System update.
- Click on the three dots in the top right corner and select Update Settings.
- Turn off the option of Automatic Download Updates.
3. Verification of key functions
After the rollback, check:
- πΆ Network and Calls: Make sure IMEI Save (see Settings) β The phone. β General information).
- π· Camera: Launch the camera app and check all modules (main, wide-angle, front-facing).
- π Charging: Connect the charger and make sure the battery is charging.
- π΅ Sound: Test speakers and microphone.
β οΈ Note: If you have been missing after the retraction NFC If you have a sensor that's gone down (a gyroscope, a compass), it means that the firmware is incompatible with your hardware, and you'll have to go back to a newer version. MIUI.
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If after rolling back the phone began to discharge faster, perform battery calibration: completely discharge the smartphone before turning off, then charge to 100% without interruptions. Repeat the procedure 2-3 times.
7. Alternative solutions: if rollbacks have not helped
If even after the rollback, problems remain, consider other options:
1. Installation of custom firmware
Android-based firmware (such as LineageOS or Pixel Experience) often works more stable than stockware. MIUI. For the Redmi Note 7 Android builds available 12/13. Cons:
- β Loss of official Xiaomi support.
- β Possible bugs with camera or module NFC.
- β The need to unlock the loader.
2.Dumping through EDL-regime
If the phone is not turned on (hard brick), there is a last chance β firmware through the phone. EDL (Emergency Download Mode, which will require:
- π₯οΈ Mi Flash Pro or QFilm.
- π EDL-cable (or closing contacts on the board).
- π¦.mbn firmware for Redmi Note 7.
β οΈ Attention: Firmware through EDL may result in loss IMEI And the serial number, unless you back up the modem and nvram partitions, is recommended only as a last resort!
3. Contact the service center
If you are not sure of your abilities or the phone is on warranty, it is better to contact the official Xiaomi service. In Russia and CIS countries, a firmware rollback is not considered a warranty case, but masters can reflash the device for a fee (about 1,500-3 000). β½).