Xiaomi’s smartphone firmware without unlocking the bootloader is a topic surrounded by myths and conflicting information. Many users face the need to upgrade or restore the device, but the official procedure for unlocking through the Mi Unlock Tool requires waiting 7-30 days, binding the account and sometimes refuses without explanation.
The answer is ambiguous. On the one hand, the manufacturer deliberately blocks these capabilities for the sake of security. On the other, there are workarounds based on firmware vulnerabilities, EDL modes, or modified tools like MiFlash. However, they all come with risks ranging from bricks to loss of warranty. In this article, we will discuss the actual working methods (for 2026), their limitations and step-by-step instructions for Redmi, POCO and Mi models.
Importantly, none of these methods guarantee 100% success, and success depends on the device model, firmware version, and even the region of purchase, for example, Chinese versions (China ROM) are often blocked more tightly than global ones (Global ROM).
Why Xiaomi is blocking the firmware without unlocking the bootloader
The bootloader in Xiaomi devices is locked by default for a reason. The manufacturer has three key goals:
- 🔒 Data theft protection: Without unlocking, an attacker will not be able to reflash a stolen phone without bypassing the password.
- 🛡️ Prevent custom firmware installation: Unofficial software may contain malware or disrupt system services (e.g. Mi Account or Find Device).
- 📱 Control of the ecosystem: Xiaomi connects users to branded services (cloud, themes, app store), and unlocking gives freedom from them.
Since 2018, the company has tightened its policy: even installing official firmware through Fastboot requires an unlocked bootloader, except for Airborne Updates (OTA) and Recovery, but they only work with signed files from Xiaomi.
⚠️ Note: All methods of bypassing the bootloader lock violate the license agreement of Xiaomi. In case of failure, the device can be locked at the hardware level (hard brick), and even the service center will not be able to restore it without an official unlock key.
What Xiaomi models can be flashed without unlocking
The success of a firmware without unlocking depends on two factors: the device model and the firmware version. Below is a table with the current data for 2026:
| Model | Supported methods | Firmware version | Notes |
|---|---|---|---|
| Redmi Note 10/10 Pro | EDL, Fastboot (patch) | Up to MIUI 13.0.4 | New versions require Mi Account authorization in EDL |
| POCO X3 Pro | Fastboot (circumvention) | MIUI 12.5–13.0.2 | It does not work on Indian versions (India ROM) |
| Mi 11 Lite | EDL (with autosignature) | Anybody. | Requires an auth file from a donor device |
| Redmi 9A/9C | Fastboot (Old exploit) | MIUI 12.0.1–12.0.3 | The new firmware is closed. |
To check the compatibility of your device:
- Find out the exact model in Settings → About the phone → Model.
- Check out the MIUI version in Settings → About Phone → MIUI version.
- Check the data against a spreadsheet or specialized forums (e.g. XDA Developers or 4PDA).
Preparation for firmware: what to do before the start
Even if you find a working method for your model, improper preparation can lead to data loss or a "brick."
Make a backup copy of all data (photos, contacts, messages)
Charge your phone at least 60%
Download the correct firmware version (only for your model!)
Install Qualcomm or MediaTek drivers (depending on the processor)
Prepare a USB-TypeC cable (preferably original)
Disable Mi Account and Find Device in Settings
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Pay special attention to the choice of firmware. For methods without unlocking, only:
- 📄 Official Fastboot Firmware from en.miui.com (Download section).
- 🔧 Modified firmware with an anti-rollback signature (e.g. from Xiaomi.eu team).
- 🛠️ EDL-Authorization files (require additional manipulation).
⚠️ Attention: Firmware through EDL On devices with a Snapdragon processor (such as the Redmi Note 10 Pro) you may need a firehose file and an authorization token, without which the process will be interrupted at the signature verification stage.
💡
If your device doesn't turn on, try pinching Power + Volume Down for 10-15 seconds to force a reboot, sometimes helping you get out of the soft brick without firmware.
Method 1: Fastboot Firmware with lock bypass (for older models)
This method works on devices until 2021 release (for example, Redmi Note 9 Pro, POCO F1) with firmware older than MIUI 12.5.
Step-by-step:
- Download the archive with firmware (.tgz or.zip) and unpack it into a folder.
- Turn your phone into Fastboot mode: Turn off the device, then press Power + Volume Down.
- Connect your phone to your PC and check for detection by the command: fastboot devices should show a serial number of the device.
- Run a modified firmware script (for example, flash_all_except_storage.bat patchy).
Key point: the script should remove the check getvar:bootloader-locked.
fastboot -u flash boot boot.img
fastboot -u flash system system.img
... of the remaining sectionsWhat happens if the script gives a "Signature verified fail" error?
Method 2: Firmware through EDL (for Snapdragon devices)
EDL (Emergency Download Mode) is an emergency firmware mode that bypasses bootloader checks. It is available on Qualcomm Snapdragon processor devices (e.g. Redmi Note 10 Pro, POCO X3 NFC). However, since 2022, Xiaomi has implemented authorization through Mi Account, which has complicated the process.
How to log into EDL:
- Turn off the phone.
- Press Volume Up + Volume Down and connect the USB cable to your PC.
- Hold the buttons for 10-15 seconds until the screen is black (the device should not turn on!).
- Check detection in Windows Device Manager: Qualcomm HS-USB QDLoader 9008 should appear.
The firmware will require:
- 🖥️ MiFlash (version 2020.3.14 or later).
- 📁 Firmware in.mbn or.elf format (for example, prog_emmc_firehose_ddr.elf).
- 🔑 Auth authorization file (can be obtained from another unlocked device of the same model).
⚠️ Attention: Firmware through EDL Without the auth file, this method may not work on new devices (released after 2023) due to hardware protection.
💡
EDL is the most powerful firmware method, but it's also the riskiest. A mistake in the modem or boot partition writing phase is almost guaranteed to lead to a "hard brick."
Method 3: Local updates via Recovery (without data loss)
If your device is powered on but you need to update your firmware without unlocking it, you can use a local update through Recovery, which works on all models, but has limitations:
- ✅ Only supported OTA-packages from the official website.
- ❌ You can't downgrade the story. MIUI (update).
- ❌ Does not work if the firmware is damaged or the device in the bootloop.
Instructions:
- Download. OTA-archive for your model (.zip format) from en.miui.com.
- Rename the file to update.zip and place it in the root of internal memory.
- Log in to Recovery: Turn off the phone, then press Power + Volume Up.
- Select Install update.zip (navigation – volume buttons, confirmation – power button).
If Recovery refuses to install the firmware with the Signature verification failed error, try:
- 🔄 Rename the file to miui_update.zip.
- 🔧 Use it. TWRP (if it is installed).
- 📥 Download firmware from another source (e.g. Xiaomi.eu).
Risks and how to minimize them
Firmware without unlocking the bootloader is always a lottery, and even if the process is successfully completed, there are consequences:
| Risk | Probability. | How to avoid |
|---|---|---|
| Soft brick (hang on the logo) | 60% | Use firmware strictly for your model and MIUI version |
| Hard brick (complete incapacity) | 30% | Do not interrupt the process, use the original cable |
| Loss of IMEI or serial number | 10% | Save a backup of the nvram partition until firmware |
| Blocking of Mi Account | 5% | Untie the account before the firmware |
Critical information: On devices with a MediaTek processor (e.g. Redmi 9, POCO C3), firmware through the SP Flash Tool without unlocking the bootloader in 90% of cases leads to a hard brick due to locking flash memory (eMMC).
To reduce the risks:
- 🔋 Use only original cables (cheap Chinese cables can interrupt data transmission).
- 🖥️ Switch from a laptop with a charged battery (suddenly the electricity will go off).
- 📡 Turn off antivirus and firewall on PC – they can block firmware utilities.