Xiaomi Mi TVs TV 4A became popular due to the combination of affordable price, high-quality screen and functional firmware MIUI TV. However, many users face the need to unlock the device β whether itβs forgotten parental controls, locked after a screen reset, or restrictions from the previous owner. Unlike smartphones, where bootloader unlocking is standard, Xiaomi TVs require a special approach.
In this article, we will analyze all the current methods of unlocking for Mi models. TV 4A 32"/43"/50"/55" (version L32M5-5AIN, L43M5-5AIN It is important to understand that the procedure depends on the reason for the blocking: it may be forgotten. PIN-code, previous owner's Mi Account or software failure after an update, we'll look at both the official ways (via service centers) and the alternative ways for power users.
Warning: Some methods require physical access to TV ports (USB, HDMI) or work with firmware through ADB. If you're not sure about your skills, you'd better go to an authorized service, but if you're willing to do it yourself, you can start!
1. Reasons for blocking Xiaomi Mi TV 4A and their diagnosis
Before you start unlocking, you need to determine exactly what's locked on your TV, which is what you choose.
- π Password/PIN-code - a request appears when you turn on or enter settings, most often set through Settings β Security β Parental control.
- π± Link to Mi Account β after reset requires entering the username / password of the previous owner (Mi Account Lock function).
- π Firmware failure β the TV loads to the Xiaomi logo and freezes or cyclically reboots.
- π« Region restrictions β blocking some features (like Google Play or Netflix) due to firmware for another market.
How to diagnose the problem:
- Try turning on the TV and wait for the lock screen to appear. If you see a password field, it's a lock screen. PIN-code or Mi Account.
- If the TV does not load beyond the logo, it is a firmware failure (possibly after an unsuccessful update).
- Check if a message like βThis device is linked to a Mi Accountβ appears, which confirms the link to the account.
If you have a handheld TV, check with the previous owner if it is linked to a Mi Account, otherwise unlocking may require a formal request to support Xiaomi.
2. Unlocking PIN-code or parental control
If you forgot. PIN-There are a few ways to reset it without losing data, and let's start with the simplest one, the standard reset through settings.
Method 1: Resetting PIN-code through the menu (if the current password is known)
If you remember your current password but want to change it:
- Go to Settings β Account and Security β Parental Controls.
- Enter the current one. PIN-code.
- Select Change Password and set a new one.
Method 2: Reset via service menu (without password)
If you don't know your password, you can use a hidden service menu, which works on most Mi models. TV 4A firmware MIUI TV 3.0:
βοΈ Preparation for discharge PIN-code
- Turn on the TV and wait for the lock screen to appear.
- On the original Xiaomi remote, press the buttons at the same time: Menu + Back (Back) + Volume - Hold for 10-15 seconds until the service menu appears.
- From the menu, select Factory Reset. Attention! This will remove all installed apps and settings.
- Confirm the reset and wait for the reset.
Warning: on new firmware (MIUI TV 4.0+) This method may not work, and in that case, you'll need to unlock through ADB (see section 4).
What to do if the service menu is not opened?
3 Unlocking the binding to the Mi Account (Mi Account Lock)
One of the most difficult locks is to link the TV to the previous owner's Mi Account, which activates after resetting to the factory settings and requires you to enter a login/password from the account to which the TV was attached. The only official way to unlock it is to ask Xiaomi for proof of purchase (check, warranty card).
Official method: request in support of Xiaomi
Unlocking through support will require:
- π Check or warranty card (proof of purchase).
- π§ Emails tied to the TV (if you know).
- π± Serial number of the TV (located on the sticker at the back or in the Settings menu) β On TV).
Instructions:
- Go to account.xiaomi.com and select Unlock Device.
- Fill out the form, specifying the serial number and the reason for unlocking.
- Attach a scan of a check or warranty card.
- Wait for a response (usually 3-7 days).
If the TV is bought by hand, try contacting the previous owner and asking them to remove the device from their Mi Account through the site.
Alternative method: bypassing through ADB (power-user)
If the official method is not suitable, you can try to delete the account link via Android Debug Bridge (ADB). This method requires connecting the TV to the computer and working with the command line.
What you need:
- π» Computer with Windows/Linux and established ADB.
- π USB-cable (Micro-USB or Type-C, depending on the model).
- βοΈ Initiated debugging mode USB on the television (if possible).
Instructions:
- Connect the TV to your computer via USB.
- Open the command line and check the connection: Adb devices If the TV is determined, move on.
- Execute the command to delete the account: adb shell pm uninstall --user 0 com.xiaomi.account or (for new firmware): adb shell am start -n com.android.settings/.MiAccountSettings
- Reboot the TV.
- Reverse USB-computer-port.
- Enable debugging on USB in the settings of the TV (Settings) β On TV. β Version of the software, press 7 times on the line with the version, then return to Settings β Additionally. β For developers).
- Use the original cable from Xiaomi.-->
β οΈ Attention! Removing system applications through ADB This method is only suitable for experienced users. If you are not sure, contact the service center.
4 Unlocking through reset to factory settings (Hard Reset)
If the TV is locked because of a firmware failure or a cyclical reboot, a full reset will help, which deletes all data, including accounts and settings, but returns the TV to working condition.
Method 1: Reset via menu (if the TV is turned on)
If the TV is loading but you canβt log in:
- On the lock screen, hold the Menu button on the remote for 5-10 seconds.
- In the menu that appears, select Settings. β Recovery and discharge β Resetting settings.
- Confirm the reset (maybe you will need to enter) PIN-code, if it has been installed).
Method 2: Hardware reset (if the TV is not turned on)
If the TV doesnβt respond to the remote or is stuck on the logo:
- Turn off the TV.
- Press and hold the Power button (on the TV body, not on the remote control) + Loudness down on the remote.
- Without releasing the buttons, connect the TV to the network.
- Hold the buttons for 10-15 seconds until the recovery menu appears.
- In the menu, select Wipe. Data/Factory Reset (use volume buttons for navigation, power button for selection).
Once reset, the TV will reboot and suggest that you set it up as new. Importantly, if the TV was linked to your Mi Account, you may need to re-enter your account data after the reset.
π‘
Hardware reset deletes all data, including firmware updates, and after the procedure, it is recommended to update the TV to the latest version via the Internet or USB.
5 Unlocking through firmware (flashing the TV)
If standard methods don't work (e.g., the TV reboots cyclically or the firmware is damaged), you have to reflash the device, which is a last resort, but it helps in 90% of software failures.
Preparation for firmware
You'll need firmware.
- πΎ Flash drive (FAT32, 32GB).
- π Official firmware for your model (download at miui.tv or xiaomifirmware.com).
- π USB-keyboard (optional for navigation in the recovery menu).
How to find out the model of the TV:
- Look at the sticker on the back panel (for example, L43M5-5AIN).
- Or go to Settings. β About the TV (if the TV is turned on).
Instructions for firmware through USB
- Download the firmware for your model (file with.zip extension).
- Unpack the archive and copy the update.zip file to the root of the flash drive (not to the folder!).
- Turn off the TV from the network, insert the flash drive into the USB-port.
- Press the power button on the body + Loudness down on the remote.
- Without releasing the buttons, connect the TV to the network. In 5-10 seconds, the recovery menu will appear.
- Select Apply update from USB β specify update.zip file.
- Wait for the firmware to be completed (10-15 minutes) and the reboot.
If the firmware is successful, the TV will boot with factory settings, and if not, try a different version of the firmware or contact the service.
What to do if the firmware is not installed?
6 Unblocking Regional Restrictions
Xiaomi Mi TVs TV 4A, Those purchased in China or other regions often have firmware restrictions, such as Google Play, Netflix or YouTube, which you can unlock, you need to change the firmware region.
Method 1: Changing the region through settings
If the TV is turned on but some apps are blocked:
- Go to Settings β Account and Security β Region.
- Choose India, Russia or Global (depending on the application).
- Reboot the TV.
Method 2: Installation of global firmware through ADB
If changing the region in the settings does not help, you can install a global firmware through ADB:
- Download global firmware for your model (for example, miui_TV_GLOBAL_...).
- Connect the TV to your computer and open it. ADB.
- Follow the commands: adb push update.zip /sdcard/ adb shell su recovery --update_package=/sdcard/update.zip
- Wait until the end and restart the TV.
β οΈ Attention! Installing firmware for another region may result in the loss of some features (e.g., voice assistant in Chinese), and there is a risk of βbrickingβ the TV if the firmware is incompatible with the model.
7. Frequent errors and their solutions
When unlocking Xiaomi Mi TV 4A And users often have typical problems, and we've collected some of the most common errors and ways to fix them.
| Mistake. | Reason. | Decision |
|---|---|---|
| "This device is locked" after resetting | TV tied to Mi Account | Contact Xiaomi with a check or use it. ADB account-delete |
| The TV doesn't see the flash drive with the firmware | Incorrect format of flash drive or firmware file | Format the flash drive into FAT32, check the file name (update.zip) |
| Cyclical reboot after firmware | Incompatible version of the firmware | Install firmware for an exact TV model (check the serial number) |
| ADB: device unauthorized | USB debugging is not enabled | Activate debugging in the developer settings (click 7 times on the software version) |
| No sound after unlocking. | Resetting audio settings | Go to Settings. β Sound and choose the right source (HDMI, TV etc.) |
If your problem is not listed in the table, try:
- π Finding a solution in forums (4PDA, Xiaomi.EU).
- π Contact the Xiaomi Service Center.