Owners of Xiaomi smartphones often face a situation when your favorite device ceases to receive official security updates or new versions of the MIUI shell. This is a natural cycle of life of the gadget, but to extend its functionality is quite real. The process of updating an old smartphone can radically change the speed of its operation and add new features that were initially unavailable.
There are several ways to solve the problem of outdated software, from standard updates through settings to complex installation of custom operating systems. The choice of method depends on the model of your device and its technical state. In this article, we will discuss all the available methods so that you can choose the best one for yourself.
Before you start any manipulation, you need to understand the risks. Flashing is an interference with system files that, if performed improperly, can cause the device to fail, but with clear instructions, you can safely reanimate even very old models, such as the Redmi Note 3 or Mi 5.
Preparing the device for system update
The first step is careful preparation. You can't upgrade your operating system properly unless the device is cleaned of junk and has enough battery power. It's recommended that you clean up your internal memory by removing unnecessary apps and photos to make room for installation files.
Make sure to back up all your important data. Even if the process goes well, there is always a chance of losing contacts or messages. Use Google's cloud services or the built-in Mi Cloud app to save information.
⚠️ Warning: Before starting any work, make sure that the battery is at least 60% charged. Interrupting the firmware process due to battery discharge can lead to irreversible damage to the software.
It is also worth checking the integrity of the USB cable and charging port. Heavy firmware files require a stable connection, and if the cable is damaged, the computer may not see the device at the right time, which will interrupt the installation.
⚠️ Note: Do not use cheap charging-only cables. Data transfer requires high-quality cable with support for data protocols, otherwise the computer will not be able to recognize the smartphone in Fastboot mode.
Official method of updating through the settings menu
The safest and easiest way is to use a built-in update mechanism. Even if the phone hasn't received updates in a long time, sometimes Xiaomi servers can still offer an up-to-date version for your model. → The phone. → Version. MIUI.
If the automatic check doesn't find any updates, try changing the region in the settings or using the manual file selection function. In the upper right corner of the screen, click three dots and select Select firmware file. This will allow you to install the archive manually downloaded from the official website.
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Use a Wi-Fi connection to download firmware, as files can weigh between 2 and 4 GB. Mobile traffic can be consumed completely and download speeds will be low.
It’s important to understand that this method only works if you haven’t changed the Android version to a newer or older one, and it’s usually impossible to switch between major versions of Android (like 6 to 9) through the settings menu.
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An official update via the menu is the only way to keep the warranty and avoid the difficulties of unlocking the bootloader, but it is limited to versions that the manufacturer supports.
Recovery method: installing firmware from a memory card
If OTA-Update doesn't work, you can use Recovery mode. This method requires you to download a special firmware archive with the.zip extension. SD-map.
To enter Recovery mode, turn off your smartphone and press the Volume Up + Power button combination. From the menu that appears, select a language (usually English or Chinese) and click on the Install icon (or "Install").
Find the previously downloaded firmware file in the list and confirm the installation. The system will check check the checksums and start the process. At this time, the screen may go out or flash — this is normal behavior.
☑️ Pre-firmware check
It is worth noting that the Recovery method often requires that the new firmware version be newer than the current one.
Fastboot and Computer (Mi Flash)
The most powerful tool for recovering old devices is the Mi Flash Tool, which allows you to install a clean system by removing all traces of previous failures, and you will need a Windows PC and ADB/Fastboot drivers to work.
First you unlock the bootloader. Without this step, the computer won't let you write the system partition. Once you unlock, download the Fastboot firmware (.tgz extension), unpack it, and launch the file. flash_all.bat Or use the Mi Flash graphical interface.
Connect the phone to the phone that's off by pressing Volume Down + Power before the rabbit in the orange cap appears. The computer will identify the device, and you can press the "Flash" button in the program.
⚠️ Note: Fastboot’s firmware process completely erases all data from the device. Pre-save photos, contacts and files, as it will be impossible to restore them after the procedure.
It is important to choose the correct firmware mode in Mi Flash: clean all (complete cleaning) or save user data. For old and problem devices, it is recommended to use a full cleanup.
Castom firmware: when the official versions do not come out
When official support for the model is discontinued, custom firmware such as LineageOS, Pixel Experience or Xiaomi.eu become the salvation.They allow you to get fresh Android where Xiaomi left users on the old version of MIUI.
To install the custom, you need an unlocked bootloader and an installed custom Recovery, most often TWRP. The process is more complicated: you need to find the right build for your model (device code name), download GApps (Google service package) and flash them through TWRP.
Risks of custom firmware
Installing third-party software gives a second life to the device, increasing its performance and security, but stability depends on the quality of the build and the activity of the development community.
Possible problems and ways to solve them
You may experience errors during the upgrade process, and most often, users experience a cyclic bootloop or logo getting stuck. If the phone doesn't boot, try logging in to Recovery and doing Wipe Data/Factory Reset.
If the device is not computer-defined, check Windows Device Manager. There may be no driver or cable that does not support data transfer. USB-port to another port, preferably on the port USB 2.0 at the rear of the system unit.
The “Downgrade not allowed” error means that you are trying to install a version of the software older than the one that is currently available, which is prohibited by the Anti-Rollback protection, in which case only a complete flashing through the Fastboot with data cleaning will help.
Comparison of methods of updating old Xiaomi devices
To organize the information and choose the best path, consider a comparative method table that will help assess the risks and skills required for each method.
| Method | Difficulty | Risk of data loss | A PC is needed. |
|---|---|---|---|
| OTA (Settings) | Low. | No. | No. |
| Recovery (Locally) | Medium | No (usually) | No. |
| Fastboot (Mi Flash) | Tall. | Yes (full) | Yes. |
| Custom firmware | Very high. | Yes. | Yes. |
To sum up, updating the old Xiaomi is a great way to extend the life of a gadget. Start with simple methods and move to complex only when necessary. It is critical to always back up data before any action with system partitions.