Owners of the popular Xiaomi Redmi 4 Pro (also known in some regions as the Mi 4c) often face the question of the relevance of the software. Despite the fact that official support for the model from the manufacturer has ceased, the desire to get a fresh interface, security fixes or simply restore the system to work remains relevant.
The main difficulty is that standard OTA (over-the-air update) methods may not work if the phone has not received updates for a long time or has been reflashed by third-party software. It is important to understand that the model is based on the Snapdragon 808 processor, which has restrictions on supporting new versions of Android with official methods. However, there are proven ways to install current versions of MIUI and even custom firmware that allow you to extend the life of the gadget.
Before you start any manipulation of system files, you need to assess the current state of the device. Xiaomi Redmi 4 Pro is a device that is reliable, but sensitive to interruption of the data writing process. In this article, we will discuss in detail all the steps from preparing a backup to manually installing the update archive through Recovery mode, you will learn how to avoid typical errors and where to look for secure firmware files.
Device preparation and risk assessment
The first step in any upgrade process is thorough preparation.Ignoring this stage can lead to loss of personal data or, at worst, to turning a smartphone into a "brick." 4 Pro is critically important to have a charged battery, as voltage surges during system partition writing can interrupt the process. 60-70% beforehand.
The second important aspect is to create a full backup: the built-in MIUI allows you to save contacts, messages and settings to the Mi Cloud or local drive. If you plan to completely flash back and clean up your data, save photos and documents to your computer or external media. Data security should be the number one priority.
⚠️ Note: Before starting the procedure, be sure to check the integrity USB-Using a damaged or cheap cable without shielding can cause a connection to break at a critical moment, making the phone unloadable.
It’s also worth making sure that the device unlocks the bootloader if you plan to use advanced installation methods. This isn’t always required for a standard upgrade via Recovery, but it’s often necessary to install global versions on Chinese firmware or vice versa. Check the current firmware version in Settings → About Phone and write it down.
Don't forget to free up space in your internal memory. Even if you don't download files directly to your phone, the system needs space for temporary files and archives to be decompressed, and it's recommended to have at least 2-3 GB of free memory to go through all the steps comfortably.
Official method: Update through settings
The easiest and safest way for most users is to use a regular update mechanism. If Xiaomi servers still store the current packages for the Redmi 4 Pro, the system will suggest installing them. → The phone. → Updating the system.
Click the "Check Updates" button. If a new version is found, the phone will prompt you to download and install it. Auto-update ensures that all user data and settings are saved. However, given the age of the model, the server can respond that "No Updates found", even if they exist as complete archives.
☑️ Check before updating
In some cases, especially when switching between regional versions (e.g. China to Global), the standard updater may block the installation, and the system will give an error "Can't update", which will require manual installation, which will be discussed below. It is also worth noting that MIUI Sometimes requires a password to unlock the screen before installing.
If the automatic search didn't work, don't panic. That doesn't mean there's no update at all. It's often the case that the package is available, but the push notification doesn't come due to time outages or a Google Play service failure. Try changing the date in the settings a month ahead, checking for updates and returning the date back, although this method rarely works for older models.
Manual installation of firmware through Recovery
The manual method is the most versatile for Xiaomi devices. It allows you to install the full version of the firmware (Full). ROM), disregarding the limitations OTA-You will need to download the firmware archive with the.zip extension specifically for the gemini model (codenamed Redmi 4 Pro/Mi). 4c).
Copy the downloaded file to the root of the phone's internal memory. Don't put it in folders, use the root directory to make it easier to find. Then go to the update menu (as in the previous section), click three dots in the corner of the screen and select "Select a firmware file." Find your archive and confirm the action.
| Type of firmware | Expansion | Method of installation | Data retention |
|---|---|---|---|
| Recovery ROM | .zip | Through the file selection menu | Yeah (usually) |
| Fastboot ROM | .tgz | Through PC and MiFlash | No (full reset) |
| OTA Update | .zip (hidden) | Automatically. | Yes. |
Once you select the file, the system will check its integrity, and if the file fits your model and the newer version, the installation process will begin, the screen will go out, the MI logo and progress bar will appear, and the important thing is that at this point the phone can get hot, which is the normal reaction of the processor to active data recording.
⚠️ Warning: Never remove the battery (if it is removable in your modification) and do not press control buttons during the firmware process. 98-99% guaranteed to cause loading errors.
If the system gives a message “Failed to update”, it may mean that you are trying to roll back to an older version or install an incompatible region (for example, Global over China without unlocking the bootloader).
Firmware via Fastboot and computer
The Fastboot firmware method is the “heavy artillery” in the Xiaomi owner’s arsenal.It requires a Windows computer, the original Windows OS. USB-This method allows you to completely clear the phone of errors and install a clean system from scratch».
To start, unlock the Unlock Bootloader through the official Mi Unlock app on your PC, a requirement for installing global firmware on Chinese devices and vice versa. Once unlocked, download the Fastboot ROM image (.tgz extension) and unpack it to the root of the C disk so that the path is short and Cyrillic-free.
adb reboot bootloaderEnter the command in the command line or press the volume button when the phone is turned off, connected to the PC. In the MiFlash utility, select the path to the unpacked folder and press "Flash." Clean All mode will completely delete the data, so (backup) is mandatory.
What to do if MiFlash makes a mistake?
It takes 200 to 500 seconds. Once it's done, it automatically reboots. The first download can take up to 10 minutes -- that's OK, the system optimizes files. Don't try to interrupt this process, even if the screen is on for a long time with the logo.
Solving Typical Errors and Problems
Redmi 4 Pro owners often face specific issues when upgrading, and one of the most common is the “Not enough space” error, even if the memory is free, because the Recovery partition has a limit on the size of temporary files, and the solution is to clear the cache through Recovery Mode before the installer starts.
Another problem is "bootloop" (cyclical reboot) after the upgrade. If the phone is stuck on the logo for more than 15 minutes, try logging in to Recovery (clamp Volume Up + Power) and doing Wipe Cache / Wipe Data. Data reset often resolves conflicts between the old file system and new system files.
- 📱 Error 7 in Recovery: Means file signature incompatibility. Only Fastboot firmware with data cleanup helps.
- 📶 Problems with IMEI: If the network is missing after the firmware, the modem partition may be damaged. EFS.
- 🔋 Quick discharge: After a major update, the system needs to be 2-3 day to calibrate the battery and optimize background processes.
Sometimes users complain that after the update, the fingerprint or proximity sensor stopped working. In the case of the Mi 4c, this may be due to incorrect driver performance in new versions of MIUI. In such cases, resetting to factory settings or rolling back to the previous stable version helps.
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If the phone is slow after the upgrade, let it lie on a charger with the screen off for about an hour, the system will perform background indexing of files and optimization of applications.
Castomic firmware: Should I go over?
Since the official support for Xiaomi Redmi 4 Pro (Mi 4c) is completed on Android 7.0 Nougat versions, many users are considering installing custom firmware (LineageOS, Pixel Experience), which allows you to get Android 10, 11 and even later, as well as fresh security patches.
However, the transition to customization has its risks: the camera on such firmware often performs worse due to the lack of original image processing algorithms from Xiaomi and Qualcomm. There may also be problems with VoLTE or NFC operation depending on the quality of the port.
If you do, be sure to check your device profile on the 4PDA or XDA Developers forum. Look for stable builds marked "Stable" or "Recommended." Unstable versions (Nightly) may contain critical bugs that make the phone unusable for daily use.
⚠️ Attention: Installing custom firmware will void the warranty (if it is still valid) and carry the risk of data loss.All actions you perform at your own risk (TWRP) It is your payment audit that is.
Custom installation will require an unlocked bootloader and installed TWRP Recovery.The process is similar to manually installing the official firmware, but instead of a MIUI zip file, you choose a custom OS zip file and, if necessary, a Google Apps (GApps) package.
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Switching to custom firmware is the only way to get a fresh Android experience on the Redmi 4 Pro, but it requires technical skills and a willingness to put up with possible camera bugs.