How to unlock Xiaomi M1804C3CG (Mi TV 4A 32): all the ways 2026

Xiaomi Mi TV 4A 32 with factory index M1804C3CG remains popular due to the ratio of price and functionality, but owners often face lock problems, this can be a binding to the Mi Account after a reset, a forgotten password from the system, regional restrictions (for example, locking Google Play) or even factory lock when buying a used model. Unlike smartphones, unlocking Xiaomi TVs has its own nuances: standard tools like the Mi Unlock Tool will not work here, and improper actions can turn the device into a “brick”.

In this article, we will discuss all the current unlock methods for the M1804C3CG, taking into account the firmware updates of 2023-2026, including official methods (via Xiaomi support), workarounds (for example, using ADB or service codes), as well as risks and alternatives. Separately, we will focus on the unique feature of this model: after a hardware reset, it requires entering a username / password from Mi Account, even if it was not previously tied – this is protection against theft, but it also creates problems when buying from hand.

1. Causes of blocking Xiaomi M1804C3CG and their signs

Before choosing the unlock method, it is important to understand what type of lock you are facing. The Mi TV 4A 32 has several locks, each requiring a different approach:

• 🔒 Blocking Mi Account – after reset (Settings) → On TV. → Reset) a window appears requiring the username and password from the previous owner, typical for firmware older than 2021.
• 🔐 Password to the system - set PIN-a code or pattern lock that is requested when settings are enabled or changed.
• 🌍 Regional restrictions – inability to install Google Play, YouTube or other services due to a link to the Chinese region (suffixed models) CN serially).
• 📦 Factory lock – TV not turning on or showing E:Cannot load Android system error after failed update.

The most common case is Mi Account locking, which occurs when the previous owner did not untie the device from his account before selling it, Xiaomi introduced this protection in 2018 to combat theft, but it also became a headache for used-tech buyers, a sign of such locking is the inscription "This device is locked. Sign in with a Mi" on the screen after the reset.

⚠️ Note: If the TV was bought from hand and the seller did not provide data from the Mi Account, it is impossible to officially unlock it without proof of purchase (check or warranty card.

2.Official ways to unlock through Xiaomi

If you have access to a previous owner's account or documents on a TV, the first thing you should do is try the official methods, which are the most secure, but they take time and verification.

2.1 Unblocking through the Mi Account website

If the TV is linked to your account, but you know your login and password:

1. Go to account.xiaomi.com and log in.
2. In the Devices section, find the Mi TV 4A 32 (model M1804C3CG).
3. Click Remove the device and confirm the action.
4. Reset the TV through Settings → About TV → Reset to factory.

If your account is not yours, but you have a check or warranty card, you can contact Xiaomi for support:

• 📧 Write to support.ru@xiaomi.com with the theme "Unlocking Mi" TV».
• 📄 Attach scans of the check, warranties and photos of the box with the serial number.
• ⏳ Response time: 3 to 7 days.

Serial number unlock (for regional restrictions)

If the TV is tied to the Chinese region (CN-version), you can request unlock to install Google Play:

1. Find the serial number on the box or in the Settings menu → About TV.
2. Fill out the form at mi.com/global/unlock.
3. Wait for a response (usually 1-2 weeks) and follow the instructions.

⚠️ Attention: Official unlocking of regional restrictions only works for models bought in Europe or Russia. CN-Xiaomi rejects versions imported from China in 90% of cases.

3 Unlock Mi Account without previous owner’s data

If the official methods have failed, informal methods remain, requiring technical skills and carrying risks (up to breaking the TV), but often the only way out.

Method through ADB (for firmware until 2022)

This method works if the TV is installed firmware older than 2022 and enabled debugging by USB (ADB).

1. Connect the TV to your PC via a USB port (usually located on the back).
2. Install Android SDK Platform-Tools on your computer.
3. Open the command line and type: adb devices If the device is determined, execute: adb shell am start -n com.xiaomi.mitv.account/.ui.AccountRemoveActivity
4. There will be a window on the TV screen to delete your account.

If debugging is disabled by USB, you can try to enable it through the service menu:

• On the remote, tap sequentially: Menu → Settings → All Settings → General → About → Android TV OS Build.
• Click Build 7 times until the Developer mode enabled appears.
• Go back to General → Developer options and turn on USB debugging.

Bypassing the lock via service cable (for new firmware)

On firmware in 2023-2026, Xiaomi has closed vulnerabilities with ADB, so requires a hardware method using a UART service cable:

• 🛠️ Take the TV apart and find contacts UART on the motherboard (usually signed) TX, RX, GND).
• 🔌 Connect a USB-to-UART adapter (for example, CP2102) contact.
• 💻 Use Putty or Screen to connect to the console (speed 115200 bauds).
• 🔑 Enter the command to reset Mi Account: fastboot oem unlock or (for some versions): echo -e "remove_account\n" > /data/local/tmp/remove && reboot

⚠️ Attention: Incorrect connection to UART If you don't have soldering experience, you should contact a service center, and the cost of unlocking this method is from 1,500 to 3,000 rubles.

4. Unlocking the password on the system

If the TV is blocked PIN-code or pattern lock, but not tied to Mi Account, you can use standard reset methods.

Reset via Recovery Mode

The most reliable way is to reset through the recovery menu:

1. Turn off the TV and simultaneously press the buttons on the remote: Menu + Volume Down (-) (on some Home + Back remotes).
2. Hold them for 10-15 seconds until the Recovery menu appears.
3. Select Wipe data/factory reset using volume buttons and confirm the choice with OK button.
4. After reset, select Reboot system now.

If the Recovery menu doesn't open, there may be a modified firmware installed on the TV, in which case only flashing through the USB Burning Tool will help.

4.2. password deletion via ADB (if debugging is enabled)

If USB debugging is activated, you can delete the password file:

1. Connect the TV to the PC and open the command line.
2. Enter adb shell su rm /data/system/gesture.key rm /data/system/password.key reboot

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If after resetting the TV asks for a Wi-Fi password but you don't remember it, connect to the network via an Ethernet cable (rear connector) to bypass the request for a wireless password and complete the setup.

5. bypassing regional restrictions (installing Google Play)

Xiaomi Mi TV 4A 32 with the index M1804C3CG often come with Chinese firmware (CN), which blocks the installation of Google Play, YouTube and other services.

5.1 Installation of global firmware via USB

This will require:

• 📁 Global Stable for Mi TV 4A 32 (download available at xiaomifirmware.com).
• 💾 Flash drive. FAT32 up to 8 GB.
• 🔌 Cable OTG (port USB I don't read flash drives on TV).

Instructions:

1. Unpack the firmware (.zip file) and copy it to the root of the flash drive, renaming it update.zip.
2. Insert the flash drive into the TV and go to Settings → About TV → System Update → Update via USB.
3. Select the update.zip file and confirm the installation.
4. After the reboot, the TV will have global firmware and support for Google Play.

5.2 Manual addition of Google Play via ADB

If you cannot re-flash, you can manually install Google services:

1. Download the GApps archive for Android TV (e.g. Open GApps, TVStock variant).
2. Connect your TV to your PC and install GApps via ADB: adb install gapps.zip
3. Reset the device.

6. Alternative solutions and advice

If none of these methods worked, consider alternatives:

• 🔄 Exchange or return – if the TV is purchased recently (within 14 days), you can return it to the seller under the law on consumer protection».
• 🛠️ Service Center – Some workshops specialize in unlocking Xiaomi through EDL-mode (cost from 2 000 rubles).
• 📺 Use without Google Play – install alternative launchers (e.g., Google Play, ATV Launcher) and download applications through APK-file.
• 🔧 Replacement of the motherboard is the last option if the lock is associated with hardware damage (cost of the board for the use of the computer). M1804C3CG — about 5,000 rubles).

If the TV is locked because of theft, it is legally impossible to unlock it, and in such cases Xiaomi locks the device via IMEI, and even flashing it will not help.

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Before buying a used Xiaomi Mi TV, always check if it is untied from the Mi Account. ask the seller to make a reset with you - if after that the TV requires a username / password, refuse to buy.

FAQ: Frequent questions about unlocking the Xiaomi M1804C3CG