Modification of the Android operating system on Xiaomi devices is often required to obtain advanced rights, install custom shells or restore the smartphone after critical errors. Standard upgrade methods through the Settings menu do not always allow you to implement modified files or roll back to an earlier version of MIUI. This is where the Fastboot mode comes to the rescue, which provides low-level access to the device’s memory.
The process of replacing system files requires careful and strict adherence to the sequence of actions, since any deviation from the algorithm can lead to the inoperability of the gadget. The user should understand the difference between regular firmware and modified Recovery, as well as be aware of the risks associated with interference in the boot sector. In this guide, we will discuss in detail how to safely install a ZIP archive through console commands.
Before you start manipulating, you need to make sure that you have all the components: the original USB cable, the charged battery and the computer with the drivers installed. Without these basic elements, further action is impossible and can be dangerous to the electronics of the device. Preparing the workplace is the first step to successfully upgrade your smartphone.
Preparation of equipment and software
The foundation of successful firmware is a properly configured work environment on your personal computer. You will need to download and install the ADB and Fastboot package, which contains the necessary executable files to interact with the phone. Also critical is the presence of specific Xiaomi drivers, without which the computer does not recognize the device in boot mode.
Make sure to back up all important data as partitions will be formatted during the process. Installing custom Recovery via Fastboot automatically erases all user data without recovery. Save photos, contacts and documents to a cloud server or external media in advance.
Check the integrity of the ZIP downloaded firmware file. A damaged file may contain checksum errors, resulting in a cyclical reboot or bricking of the smartphone. Use MD5 or SHA-1 hash amounts for verification files, if the developer provides this option.
⚠️ Note: Use of unoriginal cables or faulty cables USB Ports can interrupt data transmission at a critical moment, making the device irrecoverable by software methods.
- 🔌 The original cable. USB free of damage to insulation.
- 💻 PC with Windows, Linux or macOS operating system.
- 📂 Downloaded file recovery.img zip-fibreware.
- 🔋 Charge of the smartphone battery at least 60%.
☑️ Firmware readiness
Unlocking the Bootloader bootloader
Xiaomi’s official security policy prohibits the installation of untested software on a blocked bootloader.To begin the procedure, you must apply for unlocking through your Mi Account and wait for permission from the manufacturer, which can take from 3 to 30 days, this stage is a mandatory filter that screens out random user actions.
Once you get permission, activate the appropriate item in the developer menu. Go to Settings → About phone and click on the build number several times until the developer mode activation notification appears. Then, in the extended menu, find OEM Unlocking and activate it.
The next step is to execute the unlock command through the utility mi_unlock. Connect your phone in Fastboot mode (clamping the volume down button when turned on) and run the program on your PC.The process will erase all data, so re-creating the backup before this step will be a smart decision.
What to do if the unlock is 99% frozen?
- 🔓 Linking the Mi Account to the SIM-map.
- ⏳ Waiting for a waiting timer (from 7 to 30 days).
- 💾 Full formatting of internal memory when unlocked.
- 📲 Activation of the "Allow unlock" item in the settings.
Installation of drivers and setting up ADB
The computer must correctly identify the connected device in various modes of operation. To do this, install the universal Google USB Driver package or a specialized driver from Xiaomi. The device manager when connecting a smartphone in Fastboot mode should display the Android Bootloader Interface device without error marks.
To work with the command line, you need to add paths to executable files in the system variables of the environment, which allows you to run adb and fastboot commands from any directory without going to the tool folder every time. Open the system properties, find the Path variable, and add a path to the platform-tools folder.
The communication check is done by a simple command in the terminal, and if everything is set up correctly, you will see the serial number of your device, which confirms that you are ready for further manipulation, and the lack of response indicates a problem with the drivers or cable.
fastboot devicesIf the command returns the list of connected devices, you can proceed to the next step. Otherwise, try to reinstall the driver manually, specifying the path to the.inf file in the Device Manager.
Install custom Recovery through Fastboot
Xiaomi’s standard recovery is limited in functionality and does not allow you to install arbitrary ZIP packets. So the first step is to replace stock recovery with a modified analog, for example, TWRP or OrangeFox. This process is performed through Fastboot mode, since it requires writing to a protected partition of memory.
Download the recovery.img image that matches your smartphone model. The version should be strictly compatible with the processor and the architecture of the device, otherwise the touchscreen may not work or the partitions will not be determined. Put the file in the folder with the ADB tools for convenience.
Follow the recovery image firmware command. It is important to prevent the phone from rebooting immediately after recording, as a regular MIUI can automatically replace the modified recovery with the original one on the first run.
fastboot flash recovery recovery.imgOnce you've successfully completed a recording, you need to press the button combination to enter recovery mode, usually a volume button and power, and hold them until the TWRP logo appears.
⚠️ Warning: If you reboot your phone to the system immediately after the flash command, stock firmware MIUI It will automatically restore the original recovery and all efforts will be in vain.
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The key point is that the entry into Recovery mode should be made by force buttons immediately after the image firmware, before any automatic reboot.
The process of installing ZIP firmware
After successfully logging into the TWRP menu, you will have a touchscreen interface with file system management, and the first step is to clean the Dalvik/ART Cache, Cache and Data partitions in the Wipe tab, which will prevent conflicts between old system files and new firmware.
Then go to Install and select the previously copied ZIP file with firmware. If the file manager can't see the file, use the Show Hidden Files button or check the path to the storage. Confirm the swipe to the right to start the installation.
During the process, the progress bar and log of the operations will be displayed on the screen. Do not interrupt the power or turn off the cable until the Successful message appears. The installation time varies from 2 to 10 minutes depending on the size of the firmware and the speed of the flash memory.
| Memory section | Action. | The risk of skipping |
|---|---|---|
| Dalvik / ART | Wipe (Cleaning) | High (app errors) |
| Cache | Wipe (Cleaning) | Medium (slow work) |
| Data | Wipe (Cleaning) | Critical (bootloop) |
| System | Don't touch | Loss of data |
*System section is cleaned automatically during the firmware installation process, if this is provided by the updater script.
- 🗑️ Selecting a Wipe Item to Clean Cache.
- 📂 Navigation to the file ROM.zip Install menu.
- ✅ Confirmation of swipe installation.
- ⏳ Waiting for the process to be completed without interruption.
First start and eliminate errors
Once installed successfully, press the Reboot System button. The first launch of a new system can take up to 5-10 minutes, which is normal as it optimizes applications and creates new system files.
If the device is stuck on the MI logo or has gone into a cyclical reboot, you need to return to Recovery mode and repeat the cleaning of the Data and Cache partitions. Sometimes you need to completely flash the stock version through Fastboot to restore the basic partition structure.
If you have errors when installing a ZIP archive, check the integrity of the file and the compatibility of the Android version. Trying to install firmware for another model or region can lead to serious malfunctions in the radio module and touch screen.
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If the network does not work after firmware, try selecting Advanced from the TWRP menu and reflash only the Modem/Firmware section from stock firmware.
⚠️ Cyclical reboots in the first 10 minutes after installation are often a normal optimization process, but if they last longer than 15 minutes, a re-cleanup of the data is required.
Congratulations, you've successfully modified your device! Now you have full access to the file system and can install any modifications.