Why Xiaomi is Dull after the update: technical reasons and working solutions

You upgraded your Xiaomi firmware — your smartphone, TV or other device — and instead of the promised improvements, you got a brick with lags, friezes and slow work? This problem is familiar to thousands of users, and it is not always associated with “crooked hands” or outdated hardware. Most often, system conflicts, unoptimized software or hidden settings that the manufacturer does not advertise.

In this article, we will not be spraying on general tips like “reset the device”; instead, we will look at the specific technical reasons why Xiaomi is slowing down after the update, from errors in the Dalvik cache to conflicts with the Google Services Framework.

Warning: Some solutions will require manual intervention in system files or firmware rollbacks, and if you’re not ready for experimentation, skip sections marked “For Advanced” and focus on secure methods.

1.The main causes of brakes after updating

Updates to MIUI or Xiaomi TV OS firmware rarely go smoothly. Even if the device meets the official requirements, new versions of the software may contain unfinished optimizations or conflicting modules. Here are the key reasons why the system is starting to "dumb":

• 🔄 Incomplete cache cleanup after update: Remains of old files conflict with new libraries.
• 📦 Overflow of the section /data: newer MIUI Often increase the size of system files, but do not expand the allocated space.
• 🤖 Google Services Conflict: Particularly Important for Devices MIUI Global or firmware based on Android One.
• 🔧 Linux kernel errors: Some updates change the settings of the task scheduler (scheduler), which leads to freezes.
• 📡 Incompatibility with communication modules: new drivers for Wi-Fi/Bluetooth They may work unstablely.

According to the XDA Developers and 4PDA forums, post-upgrade brakes are most often fixed on devices with 4GB of RAM or less, as well as models released more than 3 years ago. For example, Redmi Note 8 Pro (2019) or Mi TV 4S (2018) often suffer from lags after switching to MIUI 14 or TV OS 3.0, respectively.

⚠️ Note: If the brakes appeared immediately after upgrading to the beta version of the firmware (for example, MIUI 15 Developer ROM), The problem is almost guaranteed to be related to the instability of the test software, in which case the only solution is to roll back to a stable version.

2.How to diagnose a problem: 5 steps

Before you reset or reflash the device, check what causes the brakes. Here's a checklist for the diagnosis:

Check the CPU boot in Settings → About the phone → System status

Open Settings → Applications → All applications and sort by using RAM

Run a performance test using AnTuTu Benchmark (compare with the results before the update)

Check the temperature of the processor with AIDA64 (overheating can cause trottling)

Make sure that at least 10% of internal memory is free (less than 5GB is the critical threshold)

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Pay special attention to background activity, for example, after updating to MIUI 14 Many users have noticed that the com.miui.analytics process consumes up to 20% of the CPU in the background. ADB:

adb shell pm uninstall --user 0 com.miui.analytics

If the brakes only appear in specific scenarios (for example, when scrolling tape in TikTok or playing video in 4K), the problem is most likely related to the graphics accelerator drivers, in which case resetting the graphics settings will help:

1. Go to Settings → Additional → Special features → Graphics settings.
2. Select Reset to factory settings (not to be confused with a full reset of the device!).
3. Reset the device.

3. Cache cleanup and Dalvik: step-by-step instructions

In 80% of cases, the brakes after the update are associated with a contaminated cache — especially the Dalvik cache, which is responsible for running Java applications.

Method 1: Recovery Mode (without root rights):

1. Turn off the device.
2. Press the Power button + Volume up until the Mi logo appears.
3. From the recovery menu, select Wipe & Reset → Wipe Cache.
4. Confirm the action and restart the device.

Method 2: Through ADB (for Advanced):

adb shell


su




rm -r /data/dalvik-cache/*




reboot

⚠️ Attention: If after cleaning the cache, the device boots for longer than 10 minutes, do not interrupt the process! This is normal - the system restores the cache of applications).

For Xiaomi TVs (Mi TV series, Redmi TV) the process of cleaning the cache is different:

1. Go to Settings → Device → Storage.
2. Choose Clear Cache (not to be confused with Clear Data!).
3. Dalvik resets will require ADB or factory reset.

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Cache cleaning is the safest way to remove the brakes, but it only helps if the problem isn’t related to damage to system files.

4 Conflicts with Google Services: How to Disable Unnecessary Processes

One of the most common reasons for Xiaomi’s brakes after the update is aggressive background activity on Google services, especially on devices with MIUI Global, which pre-installed both Mi Account and Google Mobile Services (GMS).

Problematic processes that can be safely disabled:

To disable via ADB, use the command:

adb shell pm disable-user --user 0 name package

For example, to disable Google Play Services (not recommended for your primary account):

adb shell pm disable-user --user 0 com.google.android.gms

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Before you turn off Google services, back up your data via Settings → Google → Backup. Some apps (such as Gmail or Google Photos) may stop working correctly.

5. Firmware rollback: when it is necessary and how to do it

If neither cleaning the cache nor disabling the background processes helped, the radical solution is to roll back on the previous firmware version.

• 📉 Productivity fell by more than 30% (according to AnTuTu).
• 🔁 The device accidentally reboots or crashes into the bootloop.
• 🔌 Battery discharges 2 times faster than before the update.
• 🎮 Games and heavy apps (Genshin Impact, Call of Duty Mobile) have become unplayable.

For Xiaomi smartphones, rollback is possible via Fastboot or Recovery.

1. Download the full firmware package (not OTA!) for your model from en.miui.com.
2. Install Mi Flash Tool (for Fastboot) or TWRP (for Recovery).
3. Unlock Bootloader (unlocked).

Step-by-step instructions for rollback via Fastboot:

Important: Firmware rollback on Xiaomi TVs (such as Mi TV Q1 or Redmi Smart TV X) is only possible through a service center. Self-flashing via USB leads to a loss of warranty and can lock the device.

6. System optimization after update

If you do not want to roll back the firmware, but the brakes interfere with the work, try to optimize the system:

• ⚡ Turn off animation: go to Settings → The phone. → Version. MIUI (Click 7 times to enable Developer Mode, then to Developer Settings → You'll be able to show the scale of the animation. 0.5x or disconnect.
• 🗑️ Remove duplicate files: use Files by Google or SD Maid for garbage cleaning.
• 🔒 Block background activity: in Settings → Annexes → Permits → Autostart Turn Off Autostart for Unnecessary Applications.
• 🔄 Reset network settings: Settings → SIM-maps and mobile networks → Reset network settings (helps with the Internet brakes).

For Xiaomi TVs, the following settings are relevant:

1. Turn off Automatic App Update in Google Play.
2. In Settings → Device → Developer Mode, enable Forced Use of the GPU (accelerates the interface).
3. Limit background activity to Mi Home and Mi Remote if you don’t use a smart home.

If the device is still slowing down, try alternative launchers:

• Nova Launcher – for smartphones (less lags when scrolling).
• ATV Launcher – for TVs (replaces the standard PatchWall interface).

7. When to contact the service center

Not all problems can be solved by yourself. Contact the service if:

• 🔥 The device overheats above 60°C to simple (check through) AIDA64).
• 🔋 The battery is inflated or discharged for 1-2 hour (even after discharge).
• 🖥️ Artifacts appear on the screen (stripes, flickering) - this may indicate damage to the graphics chip.
• 🔄 The device does not turn on after a failed update (requires soldering eMMC or firmware through the EDL).

The cost of repair in official Xiaomi services (in Moscow, 2026):

Before the service visit:

1. Make a backup of the data (if the device is turned on).
2. Check whether the warranty is maintained after independent manipulations with the firmware.
3. Check if there is a recall campaign for your model (there was a massive recall for the Redmi Note 9 Pro, for example, due to issues with the MIUI 13 firmware).

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If the device is warranty, do not try to reflash it yourself - this will cancel the warranty obligations.

FAQ: Frequent questions