The software replacement procedure on Xiaomi smartphones is often the only way to bring the device back to life after unsuccessful experiments or system failures. Redmi 4, despite its age, remains popular thanks to the reliable Snapdragon 430 processor and metal body, but software errors can turn the gadget into a “brick”. Properly executed firmware allows not only to restore the functionality, but also to move from the Chinese version of the CN ROM to the global Global ROM, gaining full access to Google services and Russian.
Before you start taking action, you need to be clear about the risks and prepare all the tools. Data loss during the flashing process is guaranteed, so backing up contacts, photos and messages is a must-have that cannot be ignored. Modern recovery methods require accurate follow-up of the operation sequence, since any error in choosing a firmware file can lead to locking the bootloader or damage to memory partitions.
In this article, we will discuss in detail all the stages of installing a new operating system, from preparing your computer to the first download of the updated interface. You will learn how to properly enter Fastboot mode, what drivers are necessary to communicate with your PC and how to avoid common errors when working with the MiFlash Tool utility. A careful study of the material will allow you to independently conduct a complex technical procedure without contacting the service center.
Tools and software development
The success of the operation depends on 90% of the quality of the workspace and the availability of current software. You will need a computer running Windows (versions 7, 8, 10 or 11), as the main tools for Xiaomi firmware are optimized for this platform. Using virtual machines or unstable versions of the OS can lead to a connection breakdown at a critical point in data writing.
The key element is quality USB-Cheap charging-only cables often cause computer-recognition errors, interrupting the firmware process in the early stages. Also make sure on the C drive: Your computer is free at least 10 GB of space, as unpacked firmware files and temporary logs can take up a significant amount of space.
To work, you will need specialized software MiFlash Tool, which is the official tool of Xiaomi engineers. In addition, you need to download the firmware files themselves for your particular model. It is important to distinguish between modifications: Redmi 4 Prime (codename markw) and the regular Redmi 4X (codename santoni) use different files, and confusing them will cause the phone to malfunction.
☑️ Pre-firmware check
Don’t forget to check the bootloader version. If you plan to switch from Chinese firmware to global, and the bootloader is unlocked, the process will go smoothly. In the case of a locked bootloader, the region change is possible only through special methods or official update tools, but full Fastboot flashing will require unlocking, which takes 7 to 15 days to wait through the Mi Account.
Selecting the type of firmware: Recovery or Fastboot
Users often get confused about the types of updates available, not understanding the difference between.zip and.tgz archives..zip files are designed to be updated via a Recovery Mode or built-in updater. This method is safer, but it does not allow you to change the device region or restore the system after serious partition damages.
To completely reinstall the system, change the region or recover from failures, you need the Fastboot format, which comes in the.tgz archives. This is the method we will consider as the main one, since it gives full control of the device and allows you to completely remove all user data and system debris.
⚠️ Note: When you run through Fastboot with the clean all option, all data on your phone will be permanently deleted. If you don't back up, it will be impossible to restore photos and contacts even in specialized laboratories.
There is also a division of firmware by region: Global Stable (global stable), China Stable (Chinese stable) and Developer (for developers). For most users, the best choice is the Global Stable ROM, which provides better autonomy and compatibility with European and Russian communication frequencies. Using Chinese versions can lead to problems with notifications from messengers and the absence of some 4G frequencies.
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Always check the checksum (MD5) of the downloaded firmware archive. If the hash does not match the one listed on the site, the file is corrupted when downloaded and its use is dangerous for the device.
Installation of drivers and login to Fastboot mode
The computer must correctly recognize the phone in a special boot mode, which requires installing Qualcomm USB Driver and Mi USB Driver. Without these components, Windows Device Manager will see unknown hardware, and MiFlash will not be able to start the recording process.
To get Redmi 4 into Fastboot mode, you need to turn the device off completely. Then simultaneously press the Volume Down and Power buttons. Hold them until an image of a hare repairing an android appears on the screen, labeled FASTBOOT. If you see the Mi logo, you are in recovery mode or normal booting, repeat the procedure.
After connecting the phone to the PC in Fastboot mode, the Android Bootloader Interface should appear in the Windows Device Manager under Devices or Other Devices. QUSB_BULK or an unknown device with an exclamation mark, the drivers are installed incorrectly, and the procedure must be interrupted to reinstall them.
What if your computer doesn’t see your phone in Fastboot?
It is important to ensure a stable connection throughout the procedure. USB-hubs or extension cords; connect the cable directly to the computer motherboard (back of the system unit).Any interruption of contact can cause the phone to stop responding to buttons and require a programmer to restore the device.
The process of firmware through MiFlash Tool
Once all the components are ready, you can proceed to the main part. Unpack the downloaded firmware archive (.tgz format) into the root of the C disk: so that the path to the folder is short and does not contain Cyrillic or spaces: C:\ROM\markw_global_.... Long tracks often cause write errors in the utility.
Run the XiaoMiFlash.exe executable on behalf of the administrator. Press the Refresh button in the program interface; if the drivers are installed correctly, your device's serial number will appear in the list. If the list is empty, check the cable connection and driver status in the Device Manager.
Press the Select button and point the path to the folder with the unpacked firmware. At the bottom of the window, select firmware mode. To clean and install completely, select clean all. This option deletes all data and unlocks the bootloader (if it was unlocked earlier), returning the phone to the state of the new device.
| Firmware mode | Data retention | Loader status | Recommendation |
|---|---|---|---|
| clean all | No (deletion) | Unlock (if possible) | Recommended for clean installation |
| save user data | Yeah (saving) | It doesn't. | Only for updating the version |
| clean all + lock | No (deletion) | Locks it down. | Only for an identical region |
Once you select the mode, press the Flash button and be patient. It takes 300 to 600 seconds. The log will show progress messages. Don't touch the cable or turn off the computer. At the end of the procedure, the status message should appear, and the phone will automatically restart.
Common Errors and How to Resolve Them
Even with strict adherence to the instructions, technical failures can occur. One of the most common errors is the code 0x80070005 or message about the unavailability of paths. This almost always means that the antivirus blocks the recording of files or the user does not have administrator rights.
Missmatching image and device error indicates that you are trying to flash firmware from one model to another (e.g. Redmi 4X on Redmi 4 Prime), in which case the process will be stopped immediately by the program to avoid damage to the hardware. Always check the codename in the firmware file name with the model of your device.
If the process is stuck in the sparse write or flash abl phase for more than 10 minutes, the write to the partition most likely crashed, in which case restart the procedure by pre-delivering and re-inserting the battery (if the design allows) or holding the power button for 15 seconds to force the restart in the Fastboot.
⚠️ Please note: Never choose the clean all option. + lock if you change the firmware region (for example, from China to Global), blocking the bootloader with someone else's firmware will lead to a hard lock of the device (Hard Brick), which can only be removed for a fee through a Mi Account or soldering memory.
Sometimes users encounter driver error when a device is defined as QUSB_BULK This is solved by manually installing the driver through Device Manager: select “Update driver”, then “Select from the list of available drivers on your computer” and find the Android Bootloader Interface in the list of compatible devices.
Initial system setup and verification
After successful firmware, the first system boot can last up to 5-10 minutes. The Mi logo will be displayed on the screen, and then the application optimization process will begin. Don't panic if the phone seems "slow" in the first minutes - this is normal behavior when creating cache and indexing files of the new system.
Go through the initial setup by connecting to Wi-Fi. Check the firmware version in the Settings menu → About the phone. Make sure the MIUI version matches the downloaded version and the build version bar indicates the Stable status. Also check the main modules: camera, speakers, sensor and communication module.
Restore your data from a Google or Mi Cloud backup. If you’ve been switching from another system (like iOS or old Android), use the built-in Mi Mover tool to wirelessly transfer contacts, messages and apps, which will greatly speed up the process of mastering the updated smartphone.
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Successful firmware is not only the appearance of the desktop, but also the stable operation of all communication and multimedia modules in the first hours of use.
It is recommended that the first day not load the device with heavy games, so that the system can finally adjust the background processes and energy saving. If the battery behaves strangely (heats or quickly sets), let the phone lie low until it turns off, and then charge up to 100% in the off state to calibrate the power controller.