How to Open on Xiaomi: Bootloader, Body and Hidden Features – The Complete Guide

Xiaomi smartphones are some of the most popular devices on the market due to the price-quality ratio, but their owners often face the need to “open” something: whether it is unlocking the bootloader to install custom firmware, removing the back cover to replace the battery or activating hidden functions through the engineering menu. In this article, we will analyze all possible scenarios – from software to hardware – taking into account the features of different models (Redmi Note 12, POCO X5, Mi 11, etc.).

It's important to understand that the bootloader unlocking and case opening procedures can lead to warranty loss, device locking or physical damage if performed incorrectly. We'll detail each step, warn against common errors, and give you safety recommendations. If you're looking for a way to circumvent MIUI restrictions or get root rights, here's the latest 2026 techniques.

1. How to open a bootloader on Xiaomi: the official way

Unlocking the bootloader is the first step to install custom firmware (LineageOS, Pixel Experience), obtain root rights or restore the “brick”. Xiaomi allows this procedure, but with a number of conditions:

  • 🔗 Linking your Mi Account to your device (required!).
  • ⏳ Wait 7-15 days after application (depending on the model).
  • 📱 Support for the official Mi Unlock Tool.
  • ⚠️ Complete data reset (Wipe All Data) after unlocking.

The process starts with activating developer mode: go to Settings → About Phone → MIUI version and tap 7 times on this item. Then turn on OEM Unlock in Settings → Additional → For developers. Without this step, the Mi Unlock Tool utility will not see the device.

Link Mi Account to your phone settings

Enable debugging over USB and OEM Unlock

Download Mi Unlock Tool from the official website

Connect your phone to your PC in Fastboot mode (clamp Power) + Vol-)-->

After preparation:

  1. Run the Mi Unlock Tool on PC (Windows 7/10/11)
  2. Sign in with the same Mi Account as you do on your phone.
  3. Connect your smartphone in Fastboot mode (black screen with a rabbit and the inscription Fastboot).
  4. Press Unlock and confirm the data reset.

⚠️ Note: Redmi Note 10 and newer models may be alerted to unofficial software every time they turn on, not a bug, but a feature of Xiaomi's protection.

2 Unlocking the bootloader without waiting: workarounds

The official 7-15-day wait is not satisfactory for many users, and there are informal methods of speeding up the process, but they are associated with risks:

  • 🛠️ Use of patches for Mi Unlock Tool (e.g. modified version from XiaomiTool) V2).
  • 🔄 Exploitation of vulnerabilities in older versions MIUI (relevant for devices until 2021).
  • 📦 Buying “unblocked” Mi accounts (illegal and fraught with blocking) IMEI).

The most reliable alternative is the use of EDL-Emergency Download Mode allows you to flash the device directly through port 9008, but requires:

  • An authorized Xiaomi account with firmware rights (for example, for service centers).
  • A special cable or adapter for entering the EDL.
  • Firmware in.mbn format for a particular model.
fastboot oem edl

This command translates the device to EDL, but it doesn't work on all models, such as the POCO F3 and Redmi K40, which require short circuits of test contacts on the board.

What happens if you use informal methods?
Unguaranteed operation of the device after firmware, the risk of a “brick” (complete lock), loss of IMEI, blocking of Xiaomi account for violation of rules. In 2023, the company tightened control: some devices after unofficial unlocking receive a hardware ban (it is impossible to return official software).

3. How to open the back cover Xiaomi: step-by-step instructions

Removing the lid may be needed to replace the battery, speaker or camera. Xiaomi's smartphone design varies:

ModelType of lid attachmentDifficultyTools
Redmi 9/10Glue + latchesMediumPlastic spatula, hair dryer
POCO X3/X4Perimeter latches.Easy.Suction, mediator.
Mi 11/12Glue + screwsTall.Screwdriver T3, isopropyl alcohol
Redmi Note 8/9 ProLatches + glueMediumSuction cup, plastic tool

Common algorithm:

  1. Turn off the phone and remove it. SIM-map.
  2. Heat the edges of the cover with a hair dryer (60–70°C) for 2-3 minutes to soften the glue.
  3. With the help of a suction cup, lift the lid from the bottom edge (near the USB-C connector).
  4. Carefully swipe the plastic blade around the perimeter, snapping the clamps.

⚠️ Note: On models with aluminum frame (Mi) 10T, POCO F4) If you open the antenna lines in a careless manner, you can damage the antenna lines, which will lead to the loss of the network. 4G/5G. If you are not sure, contact the service.

Battery replacement

Repair of the charging connector

Dust cleansing

Replacement of display

Other causes-->

4.How to Open Hidden Xiaomi Features Through Engineering Menu

MIUI hides a lot of useful options that can be activated through the engineering menu or USSD codes.

  • 📡 Network test: ##4636## (shows signal strength, information about the signal) SIM-map).
  • 🔋 Battery Diagnostics: ##2840## (Temperature and Capacity Test).
  • 📸 Camera settings: ##6484## (access to manual adjustment) ISO, extraction).
  • 🔊 Speaker and microphone test: ##36446337##.

To access advanced network settings (e.g., forced VoLTE or 5G enabled):

  1. Enter the dialer ##4636##.
  2. Go to the tab Information about the phone.
  3. Click on Network Selection and manually specify mode (e.g. LTE only).

On some models (Redmi Note 11, POCO M4 Pro) these codes can be blocked, in which case use the MTK Engineering Mode app (for MediaTek processors) or Qualcomm Service Menu (for Snapdragon).

💡

If the USSD codes don't work, try typing them without the last star (e.g. #4636## instead of #4636###*).

5. How to Open Access to Root Rights on Xiaomi

Getting root rights gives you complete control of the system, but it gives you no security, and it increases security risk. In 2026, two methods are relevant:

  1. Through Magisk (recommended): Unlock the bootloader (see section 1). Install custom recovery (TWRP or OrangeFox). Sweep Magisk.zip through recovery.

Through a boot image patch

Dynamic Partition

  • Download the original boot.img for your firmware.
  • Process it in Magisk Manager.
  • Sweat the modified image through fastboot flash boot magisk_patched.img.
  • Save the settings and restart the router.

To check for port opening, use yougetsignal.com. If the port does not open, make sure that:

  • 🔌 On the target device (PC, server) firewall is turned on.
  • 🌐 The provider does not block incoming connections (relevant for mobile Internet).
  • 🔄 Rule added for correct IP (Check through ipconfig in CMD).

7. How to Open Access to Xiaomi Smart Devices (Mi Home)

The Mi Home ecosystem includes smart lights, outlets, robot vacuum cleaners and sensors, and to open them up for integration with other systems (such as Home Assistant or Google Home), you will need to:

  1. Get a device token: Use the Mi Home app on Android. enable debugging over USB and get a token through Packet Capture or Mi Token Extractor.
  • In Mi Home, select Mainland China (more features).
  • Activate LAN Control in your device settings.