The process of manually installing the operating system on Xiaomi, Redmi or Poco smartphones is often a necessity for advanced users.This may be due to the desire to upgrade to a more recent version of Android, install custom build. MIUI or fix software errors that cannot be solved by standard methods. ZIP-Archives are one of the most reliable ways to avoid restrictions. OTA-Updates and gives full control over the software version.
However, this method requires increased care and strict adherence to the sequence of actions. Any error in the preparation stage or in the process of writing data can lead to a device failure, known as a “brick.” Before starting manipulation, it is extremely important to understand the difference between the download modes and the types of files you are going to use.
In this article, we will take a detailed look at the entire journey from file preparation to the final system reboot, learn how to properly prepare Bootloader, which recovery mode to choose and how to avoid the typical mistakes that beginners face in the world of Android modification.
Preparation for installation: files and tools
The first and most important step is to find and verify firmware compatibility. The firmware file must have a.zip extension and be designed specifically for your smartphone model. Using the archive from another device, even if it looks identical, is guaranteed to cause driver problems or complete system failure.
You'll need to download the firmware file itself, which usually weighs between 2 and 4 gigabytes. USB-You can also install the cable and computer for initial preparation, although you can do the installation without a PC if the file is already in the phone's memory. Make sure that the battery is at least 60%, as the recording process requires a stable voltage.
You need to back up all your important data in advance. During the installation process, especially if you're planning to change your region or Android version, your internal memory will be completely cleared, and you'll save your contacts, photos and documents to the cloud or to an external storage medium.
⚠️ Warning: Never interrupt the installation process even if the screen is out or the phone appears to be getting stuck. Forced reboots at the time of writing system partitions can irreversibly damage the bootloader.
- 📂 Downloaded ZIP-firmware file corresponding to the device model.
- 🔋 Battery charge minimum 60-70% steady-work.
- 💾 Backup of data on external media or in the cloud.
- 🔓 Unlocked bootloader (Bootloader) for custom firmware.
☑️ Firmware preparation
Unlock the bootloader and Recovery Types
Official firmware distributed through OTAs usually do not require unlocking the bootloader. However, if you want to install a custom build or global version on a Chinese smartphone, access to Bootloader must be officially accessed through the Mi Unlock website.
Once unlocked, you will need access to Recovery mode. Xiaomi smartphones have two main types: stock. MIUI Recovery and custom (e.g, TWRP). Stock Recovery have limitations and often do not allow the installation of modified ZIP-Files or firmware from other regions without additional manipulation.
Castomic Recovery, such as TWRP, Provides enhanced capabilities, including installation ZIP-archives from any source, create complete backups of the system and clean specific sections. ROM presence TWRP This is a requirement, while for official ZIP-Sometimes the updates are enough and stock menu.
What is the difference between Fastboot and Recovery?
Step-by-step: installation via TWRP
If you have a custom recavator installed on your device TWRP, installation ZIP-The file becomes as flexible as possible. First, copy the downloaded firmware archive to the internal memory of the smartphone or to the computer. SD-Then turn off the device completely and press the key combination to enter recovery mode (usually Volume Up). + Nutrition).
After you load the TWRP interface, select Wipe. To install the new system cleanly, you need to format the Dalvik/ART Cache, Cache, System, and Data partitions. Don't touch the Internal Storage partition unless you want to lose files you just copied.
Go back to the main menu and press the Install button. In the file manager, find yours. ZIP-So you can highlight the file, and you can confirm the swipe at the bottom of the screen, and you can start writing, which can take 5 to 15 minutes, depending on the amount of data and the memory speed.
The sequence of actions in TWRP:
1. Wipe -> Advanced Wipe -> Dalvik, Cache, System, Data -> Swipe to Wipe
2. Back -> Install -> Select zip file -> Swipe to Confirm Flash
3. Reboot SystemOnce you've completed the installation, you'll see a message called Successful. Press the Reboot System button. The first download after flashing always takes up to 10 minutes longer than usual. Don't panic if the manufacturer's logo is on the screen longer than usual.
💡
Clean Install via TWRP with partition formatting is the most stable way to change firmware, eliminating errors of the previous system.
Install official ZIP updates in stock recovery
Device owners who do not want to unlock the bootloader or install TWRP, You can use the built-in menu. MIUI Recovery. This method is only suitable for official ZIP-firmware MIUI. To enter this menu when the phone is turned off, press Volume up + Power until the logo appears, then release the power button while continuing to keep the volume up.
From the menu, select a language (usually English and Chinese) and go to Install Update or Apply Update, where you will be asked to select a file from internal memory. If the firmware file has the correct name and structure, the system will begin checking and installing.
Xiaomi’s stock recavator performs a rigorous signature check. If you try to install a modified firmware or file from another model, the process will be interrupted with a verification error, in which case installation is only possible through Fastboot mode using your computer and the Mi Flash Tool utility.
| Parameter | TWRP Recovery | Stock MIUI Recovery |
|---|---|---|
| Type of firmware | Any (Custom, Global, CN) | Only official MIUIs |
| Verification of signature | Missing or offline | Strict checks |
| Formatting | Full control of sections | Automatic. |
| Difficulty | High (requires skills) | Low (automated) |
Possible errors and methods of their solution
Various errors can occur during the installation process, the most common of which is Error 7 or an incorrect checksum message, which means that the firmware file is corrupted when downloaded or does not match the device model, in which case you need to recheck the hash amount of the file and download it again from a reliable source.
Another common problem is a “boot loop” (cyclical reboot), where the phone is constantly rebooting without reaching the desktop, often solved by rewiring the Data and Cache partitions in recovery mode, and if this does not help, an unstable version of the software may have been installed or the system partition damaged.
Sometimes users have a problem when the VoLTE, camera or fingerprint sensor does not work after installing the firmware, this indicates that the radio module or drivers are incompatible. ZIP-patch or return to the previous stable version via Fastboot.
⚠️ If after firmware the phone stopped responding to buttons and the screen black, but vibrates when connected to charging – the device went into mode EDL You'll need professional recovery through service software.
Optimizing the system after installation
Once the new firmware is successfully installed and the first boot is done, the system will begin the application background optimization process, which can take anywhere from 10 to 30 minutes, during which time the phone can heat up and run slowly, and let the device complete this step without turning it off.
It is recommended to check the Android version and build number in the Settings → About Phone section immediately after download. Make sure all basic functions work correctly: calls, mobile Internet, Wi-Fi and Bluetooth. It is also worth checking the proximity and light sensors.
To extend the battery life after flashing, it's helpful to calibrate the phone until it's completely turned off, then charge it when it's off to 100%, then turn it on without disconnecting from the grid, which will help the system correctly determine the capacity of the battery.
💡
After installing the new firmware, delete the old cache files and the remnants of previous applications through the storage settings – this will free up space and speed up the system.