How to Update Your Firmware on Xiaomi Redmi: All Ways From OTA to Fastboot

Updating the firmware on Xiaomi Redmi smartphones is a key process for improving performance, fixing bugs and getting new features. However, not all users know that there are four main ways to update: automatic air updates (OTA), manual installation via Recovery, firmware in Fastboot mode and using the utility MIUI bootloader. Each method has its nuances, benefits and potential risks.

In this article, we will discuss all the current update methods for the Redmi Note 12/13, Redmi 10/11, Redmi K50/K60 and other lines, including stable and beta versions of MIUI. Special attention will be paid to critical errors that can occur when you get the wrong firmware (for example, brick device or loss of IMEI), and give recommendations for their prevention. If you have never updated your smartphone manually, start with the automatic method (OTA), if you are an experienced user, study the capabilities of Fastboot and custom firmware.

1. Update Preparation: What to Do Before Firmware

Before you start an update, be sure to follow a few key steps to avoid data loss or system damage.Even if you upgrade through an OTA, these precautions will save your nerves and time.

First, check the current MIUI and device model. This can be done in Settings → About Phone → MIUI. Write down or take a picture of this data, which you will need to choose the right firmware. For example, the Redmi Note 12 Pro+ 5G and Redmi Note 12 Pro 4G use different firmware files, and installing an incorrect one can cause a 5G module or camera to fail.

• 📱 Save important data: contacts, photos, messages (use Mi Cloud or third-party services like Google Drive).
• 🔋 Charge the battery to at least 60% – when upgraded via Recovery or Fastboot, the discharge may interrupt the process.
• 🌐 Connect to a stable Wi-Fi (for the purpose of the OTA) Or download the firmware in advance (for manual methods).
• 🔐 Disable the bootloader lock (if you plan to use Fastboot), otherwise the system will not allow you to install firmware.

Also make sure that the device has enough free space. Update through OTA requires a minimum of 2-3 GB on the system partition, and for manual firmware up to 5 GB (depending on the version). If memory is not enough, transfer the files to the memory card or computer.

⚠️ Note: If your device was purchased in China (suffix version) CN in the model), firmware global version (Global or EEA) It can block certain functions, such as Google Services or NFC. Before firmware, check compatibility on forums 4PDA or XDA Developers.

Battery charge ≥60%|Backup copy of data created|Current version MIUI recorded|Free seat ≥3GB|bootloader lock is disabled (for Fastboot)-->

Method 1: Automatic Air Update (OTA)

The easiest and most secure method is an air-to-air update (OTA), which is suitable for most users because it requires no technical skills and is executed from the smartphone interface, and the system finds the latest updates and installs them with minimal user involvement.

To check for updates, go to Settings → About Phone → System Update. If an update is available, you will see a Download button. Once the file is downloaded (usually weighing 1-2 GB), the system will prompt you to install it. Don't interrupt the process - this can cause a download failure.

• ✅ Pluses OTA: simplicity, no risk of "bricking", all data and settings are saved.
• ❌ Cons: updates come with a delay (sometimes 1-2 months later than the official release), you can not choose the version MIUI (Only the one that the system offers).

If the update doesn’t come automatically, try the following:

1. Reboot your smartphone.
2. Clear the cache of the System Update application in Settings → Applications → Application Management.
3. Connect to another Wi-Fi network or use mobile internet.
4. Check if the updates in the settings are disabled (sometimes this happens after a manual reset).

⚠️ Note: If after the update OTA smartphone began to overheat or discharge quickly, reset the cache in Recovery (click Power) + Volume up when turned on, select Wipe Cache.This often solves problems without losing data.

Only through OTA| Manual firmware via Recovery|Use Fastboot|I never update |I don't know what firmware is-->

Method 2: Manual update via Recovery

If OTA-Update is not available or you want to install a specific version MIUI (For example, switch from stable to beta, use the Recovery firmware method, which is suitable for most Redmi models and does not require unlocking the bootloader.

To start, download the official firmware from MIUI Downloads. Select your model (e.g. Redmi Note 11 Pro+ 5G) and the desired version (e.g. MIUI 14.0.5 Global).

• 📁 Step 1. Place the downloaded file in the root directory of internal memory (not in the folder!).
• 🔄 Step 2. Go to Recovery: Turn off your smartphone, then pinch the Power. + Loudness up before the appearance of the Mi logo.
• 🌐 Step. 3. In the Recovery menu, select the language (if available), then Install. update.zip to System.
• ⏳ Step 4: Wait for the process to complete (5-10 minutes) and restart the device.

If your smartphone is stuck on the Redmi logo for longer than 15 minutes after you have firmware, do a hard reset (Wipe Data in Recovery), but note that this will delete all data. To avoid such situations, always check the integrity of the downloaded file (compare its hash with the official Xiaomi website).

4. Method 3: Fastboot Firmware (for power users)

Fastboot is the most powerful, but also the riskiest, and allows you to install any version of MIUI, including custom firmware, but requires an unlocked bootloader and command line work, which is recommended only for those who understand the consequences of wrong actions (up to the complete loss of the device).

To run through Fastboot, you will need:

• 🖥️ Computer with drivers installed ADB/Fastboot (You can download from the Android website).
• 📦 Official or custom firmware in.tgz format (for Xiaomi – from the site) en.miui.com/a-234.html).
• 🔓 Unlocked bootloader (instructions on the official website, requires binding Mi Account).

Firmware process:

1. Unpack the firmware in the folder with fastboot and adb.
2. Connect your smartphone to your PC in Fastboot mode (clip Power + Volume down when turned on).
3. Launch the file. flash_all.bat (for Windows, or enter manual commands: fastboot flash boot boot.img fastboot flash system system.img fastboot flash recovery recovery.img fastboot reboot

⚠️ Note: Fastboot firmware on Redmi models with Mediatek processor (e.g. Redmi) 10A or Redmi 9C) requires the use of utility SP Flash Tool instead of standard commands. Wrong tool will lead to error. BROM ERROR: S_FT_ENABLE_DRAM_FAIL (0xFC0).

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Before you run through Fastboot, create a full persist backup with fastboot pull /dev/block/bootdevice/by-name/persist persist.img. This will save IMEI and serial number data that can be erased if the firmware is incorrect.

5. Method 4: Using MIUI bootloader and third-party utilities

For those who don’t want to manually search for firmware on official sites, there are utilities like MIUI bootloader or XiaomiTool that automate downloads and even offer a choice between stable, beta versions and custom firmware (for example, xiaomi.eu).

MIUI bootloader (available for Windows/macOS/Linux) allows you to:

• 🔍 Find the current firmware on the device model.
• 📥 Download files directly from Xiaomi servers (without speed limits).
• 📊 Comparison of versions MIUI Choose the best for your region.

To use the utility:

1. Download and install MIUI bootloader from the official website.
2. Connect your smartphone to your PC and select its model in the program.
3. Click Download next to the desired version (e.g. Latest Stable Global).
4. After downloading, follow the firmware instructions via Recovery or Fastboot.

For Redmi models with a Qualcomm processor (such as the Redmi Note 12 Pro+), XiaomiTool V2 is also suitable, which makes it easier to unlock the bootloader and firmware. However, beware: some custom firmware (such as the Pixel Experience) can disable the 5G broadband module on devices where it is officially supported.

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The side of utilities like MIUI bootloader saves time, but always check the hash of downloaded files (MD5/SHA1) for compliance with official data. Fake firmware can contain malicious code.

6. Frequent update errors and how to fix them

Even when following instructions, users encounter errors, and consider the most common problems and solutions:

If Google Play or other services are missing after the update, chances are you have installed a Chinese version of MIUI (CN).

1. Run the global version (Global or EEA) through Fastboot.
2. Install Google Installer from APKMirror (not all models).

7.How to roll back an update if the new version of MIUI is not working well

Sometimes fresh firmware brings more problems than benefits: bugs, brakes, quick battery discharge. In such cases, you can roll back to the previous version, but this requires caution. The main rule is: do not roll back to the version older than the one installed on the device out of the box (for example, if the smartphone was with a MIUI 13, do not install MIUI 12).

For the kickback:

1. Download the MIUI version from MIUI Downloads (it should be older than the current version, but not older than the factory version).
2. Sweat it through Recovery or Fastboot (depending on the model).
3. If after rollback the smartphone requires a reset, perform Wipe Data (data will be deleted!).

On Redmi models with a Mediatek processor (such as the Redmi 9T), the rollback can block the bootloader, in which case only the official Xiaomi service center will help.

⚠️ Note: A rollback to the version with an older version of Android (like Android 13 on Android 12) can cause data loss in the userdata section, even if you didn't run Wipe.Always do a backup!

FAQ: Answers to Frequent Questions