Updating Android 9 to Android 11: a complete guide with proven methods

The transition from Android 9 Pie to Android 11 is not just a change in numbers in the version, but a serious update in the functionality, security and performance of your smartphone. Many users are faced with a dilemma: is it worth updating if the device is already stable? The answer depends on several factors: the phone model, the availability of official firmware and your needs.

Android 11 brought with it improved app permission management, built-in screen recording, optimized notifications and more flexible media management. However, not all devices support this update out of the box. Manufacturers often limit the support period for their gadgets, especially in the budget segment. Therefore, before starting the process, it is important to understand whether an upgrade is possible for your model.

In this article we will look at all possible update methods - from official methods to alternative solutions for devices that no longer receive support from the manufacturer. You will learn how to prepare your phone for the procedure, what risks exist and how to minimize them. And if something goes wrong, you will find instructions on how to restore the device’s functionality.

Checking device compatibility with Android 11

Before you start updating, you need to make sure that your smartphone officially supports Android 11. Manufacturers publish lists of devices that will receive the update, but this data is not always easy to find. Let's start by checking the current version and model of the phone.

Go to Settings → About phone → Software information. Here you will see the current Android version and device model. Write down this data - you will need it to find the official firmware. Pay special attention to code name models (for example, Redmi Note 8 Pro may have a code begonia), since firmware is often tied to it.

Next, check support on the manufacturer's website:

• 🔍 Samsung: service Samsung Members or support section on the official website
• 🔍 Xiaomi: forum MIUI or application System update
• 🔍 Google Pixel: official Android blog or update section
• 🔍 Other brands: search by model on the manufacturer's website or in communities (for example, 4PDA)

⚠️ Attention: If your device was released before 2018, the likelihood of an official update to Android 11 is extremely low. In this case, consider the alternative methods described below.

For convenience, we have collected data on popular models in the table:

Brand	Model (year of manufacture)	Android 11 support	Notes
Samsung	Galaxy S10 (2019)	Yes	Update via Samsung Smart Switch
Xiaomi	Redmi Note 8 Pro (2019)	Yes (MIUI 12.5)	Requires bootloader unlocking
Google	Pixel 3 (2018)	Yes	Over the air update (OTA)
Huawei	P30 Pro (2019)	No (EMUI 11 based on Android 10)	Officially only Android 10
OnePlus	7T (2019)	Yes (OxygenOS 11)	Update via settings

If your model is not on the list, look for information on thematic forums. Users often share successful updating experiences even for unsupported devices via custom firmware.

Preparing the device for an update

Regardless of the chosen update method, preparing the phone is a critical step. Neglecting it can lead to problems. loss of data, malfunctions or even “bricking” of the device. Let's start with the most important thing - backup.

Create a complete copy of all data:

• 📱 Contacts and messages: export via Settings → Google → Backup or specialized applications like Super Backup
• 📷 Photos and videos: download to Google Photos or copy to PC
• 🎵 Multimedia: check folders Download, DCIM and Music for important files
• 🔑 Passwords and settings: use Titanium Backup (required root access) or write down important parameters manually

Next, make sure that:

1. The battery charge is at least 80% (or connect the phone to charge)
2. There is enough space on the internal memory (minimum 3-5 GB free)
3. All ad blockers and VPNs are disabled (they may interfere with firmware downloading)
4. You have an original USB cable (for connecting to a PC if necessary)

Back up all data|Charge your phone to 80%+|Free up 5 GB of memory|Disable VPN and blockers|Prepare the original USB cable-->

⚠️ Attention: If you use device encryption, be sure to remember the unlock password After the update, you may be required to enter it to access. data.

For devices with an unlocked bootloader or root access, preparation includes additional steps:

• Check the status OEM Unlock in Settings → For developers
• Make sure that the correct drivers are installed ADB and Fastboot on your PC
• Download the current version Platform Tools from Google

Official update through phone settings (OTA)

The easiest and safest way. — over-the-air update (OTA). If the manufacturer has released firmware for your model, the system should offer it automatically. Here's how to check and install the update manually:

1. Connect to stable Wi-Fi network (downloading the firmware can take 1.5-3). GB).

2. Go to Settings → System → System update (the path may differ depending on the shell).

3. Click Check for updates. If a new version is available, follow the instructions on the screen.

The process will take from 20 to 60 minutes, depending on the model. The phone will reboot several times - do not interrupt the process and do not remove the batteryOnce completed, check your Android version. settings.

If the update is not found, try the following:

• 🔄 Restart the phone and check again
• 📶 Connect to another Wi-Fi network (sometimes corporate networks block updates)
• 🗓️ Check if the update is delayed in Settings → System update → Settings (⚙️) → Auto update
• 🔧 Reset network settings in Settings → System → Reset → Reset Wi-Fi, mobile network and Bluetooth

⚠️ Attention: On some devices Huawei and Honor after the update, you may need to re-authorize in Google services due to features HMS.

Update via PC using official utilities

If the OTA update is not available, but the manufacturer has released firmware for your model, you can install it via a computer. Each brand uses its own. utilities:

For Samsung:

1. Download and install Samsung Smart Switch from the official website
2. Connect the phone to the PC with the original cable
3. Run the app and select Update → Update
4. If a new version is available, follow the wizard instructions

For Xiaomi:

1. Download Mi Flash Tool and firmware for your model from the site en.miui.com
2. Unzip the firmware into a folder without Cyrillic characters
3. Switch the phone to mode Fastboot (press Power + Volume down)
4. Connect to the PC and select the folder with the firmware in Mi Flash Tool

For Google Pixel:

1. Download the factory image from the site developers.google.com
2. Unzip the file and connect the phone in mode Fastboot
3. Run script flash-all.bat (Windows) or flash-all.sh (Mac/Linux)

General recommendations for all methods:

• 🖥️ Use official USB 2.0 cables and ports (they are more stable than 3.0 for firmware)
• 🔌 Do not connect your phone via USB hubs or docking stations
• ⚡ Disable all apps that can block ports (antiviruses, download managers)

Brand	Utility	Phone mode	Link to firmware
Samsung	Smart Switch	Normal	samsung.com/ru/smartswitch
Xiaomi	Mi Flash Tool	Fastboot	en.miui.com/download.html
Google	Fastboot	Fastboot	developers.google.com/android/ota
OnePlus	Oxygen Updater	Normal	oxygenupdater.com

What to do if the utility does not see the phone?

1. Check the connection to another USB port (preferably on the back of the PC).

2. Install drivers manually through Device Manager (select "Update driver" → "Search on this computer" → specify the folder with drivers from Platform Tools).

3. Try a different cable (original or certified USB-IF).

4. To do this, reboot while holding down the Shift key and select "Disable mandatory driver signature verification").

Installing custom firmware (for unsupported devices)

If the manufacturer has not released an update for your model, the option remains with custom firmwareThis method requires technical skills and is fraught with risks, but it allows you to get it. current version of Android even on older devices. The most popular projects:

• 🤖 LineageOS - pure Android with minimal modifications
• 🔄 Pixel Experience - firmware with Google Pixel functionality
• ⚡ Paranoid Android - optimized for performance
• 🛡️ Havoc-OS — with advanced privacy settings

The installation process includes several steps:

1. Unlocking the bootloader:

   fastboot oem unlock
   fastboot flashing unlock

   (commands may vary for different brands)

2. Installing custom recovery: usually used TWRP or OrangeFox
3. Formatting partitions: in recovery, do Wipe → Advanced Wipe (select Dalvik, Cache, System, Data)
4. Firmware installation: transfer the ZIP file to your phone and select Install in recovery
5. Installing Gapps: if the firmware is without Google services, additionally flash the package Open Gapps (select option arm/arm64 and Android version 11)

Important nuances:

• 🔐 Unlocking the bootloader erases all data from the device
• 📱 Before installation, check the compatibility of the firmware with your model on the forum XDA Developers or 4PDA
• 🔄 Some functions may not work (NFC, broadband LTE, cameras)
• 🔄 After installation, you may need to manually configure the network (APN)

⚠️ Attention: Installing custom firmware voids the manufacturer's warranty can lead to unstable operation of the device on some models (for example, Samsung c Knox) this also blocks access to Samsung Pay and other protected functions.

Example commands for unlocking the bootloader on Xiaomi:

fastboot oem unlock
After confirmation on the phone:
fastboot flash recovery twrp.img
fastboot boot twrp.img

Solving problems after the update

Even with a successful update, various failures may occur. Let's look at typical problems and methods. their solutions:

1. The phone does not turn on or is stuck on the logo:

• 🔄 Hold the power button for 10-15 seconds to force a reboot
• 🔧 If this does not help, try logging into Recovery Mode (usually Power + Volume up) and run Wipe Cache Partition
• 📱 For serious failures, flashing via PC may be required

2. Rapid battery drain after update:

• 🔋 Calibrate the battery: discharge the phone to 0%, then charge to 100% without interruption
• 📊 Check the battery consumption in Settings → Battery - perhaps some application is consuming too much energy
• 🔄 Disable unnecessary functions: Settings → Google → Device scanner, Wi-Fi Scanning, Bluetooth Scanning

3. Mobile data or Wi-Fi does not work:

• 📶 Check APN settings: Settings → Mobile network → Access points (APN) → reset to factory settings
• 🔄 Reboot your phone and router
• 📱 Reset network settings: Settings → System → Reset → Reset Wi-Fi, mobile network and Bluetooth

4. Applications keep closing:

• 🗑️ Clear the application cache: Settings → Applications → [name] → Memory → Clear cache
• 🔄 Update applications via Google Play
• 📦 If the problem persists, delete and install the application again

Problem	Possible reason	Solution
Phone overheats	Background optimization after update	Give 24-48 hours for stabilization or reset cache
Fingerprint does not work finger/face	Reset security settings	Delete old data and add fingerprints again
Photos disappeared after update	The path to the DCIM folder has changed	Check folder /storage/emulated/0/Pictures
Google Pay does not work	Uncertified device	Check certification in Google Settings or flash Magisk

If none of the methods helped, consider the option rollback to the previous version or reset to factory settings settings. Remember that resetting will delete all data from the device, so make a backup first.

How to return to the old version of Android?

1. Find the official Android 9 firmware for your model.

2. Install it through the appropriate utility (Odin for Samsung, Mi Flash for Xiaomi and etc.).

3. Perform a complete data reset after a rollback (Wipe Data/Factory Reset in recovery).

4. Restore the data from the backup.

Attention: rollback may block future OTA updates!

Optimization Android 11 after installation

After a successful update, it is recommended to perform several steps to improve performance and security:

1. Setting application permissions:

Android 11 has made major changes to the permissions system. Now applications can only request access to specific files, and not to the entire memory. Check your settings. data-i="291">Settings → Applications → [name] → Permissions

• 📂 Settings → Applications → [name] → Permissions
• 🔒 Limit access to Location, Microphone and Camera for unnecessary applications
• 🗃️ Use the new file manager to select specific folders instead of full access to storage

2. Activating new features:

• 🎤 Screen recording: add a tile to the quick settings panel or use Settings → Accessibility → Screen recording
• 📊 Notifications: set up priority conversations in Settings → Notifications → Conversations
• 🔌 Quick settings: add useful elements (for example, Airplane mode or Dark mode) through the panel editor

3. Improved performance:

• 🔋 Turn on Adaptive battery in Settings → Battery
• 📈 Activate Application optimization in Settings → Applications → Special Access → Battery Optimization
• 🗑️ Clear the system application cache via Storage Settings

4. Security settings:

• 🔐 Update passwords and enable two-factor authentication for important accounts
• 🛡️ Check Settings → Google → Security for unusual activity
• 🔄 Set up automatic security updates in Settings → System → System update → Settings (⚙️)

⚠️ Attention: The data storage system has changed in Android 11. If you use a file manager, update it to the latest version, otherwise you may have problems accessing folders.

FAQ: Frequently asked questions about updating Android

Is it possible to update Android 9 to 11 without losing data?

When official update (OTA or through manufacturer utilities), all data is saved. However when installing custom firmware requires a complete wipe of the partition datawhich leads to the loss of user files. Always make a backup copy before updating.

Exception: some custom firmware (for example LineageOS) support updating without wipe, but this only works when migrating from one firmware version to another (for example, from LineageOS 17.1 to 18.1).

Why didn’t the manufacturer release an update for my model?

Manufacturers limit device support for several reasons:

• 📅 Age devices: most brands support smartphones for 2-3 years
• 💰 Economic feasibility: updates for budget models often do not pay off
• 🔧 Technical limitations: old processors may not support new Android features
• 📱 Brand policy: for example, Huawei after the sanctions, many models stopped updating to the latest versions

To find out the exact reason for your model, check the official statements of the manufacturer or contact support.

How to check that the update was successful?

After the update, follow the following checks:

1. Go to Settings → About phone and make sure that the Android version is listed as 11
2. Check the build number - it should be different from the previous one
3. Run several applications to make sure in stability
4. Check the main functions: calls, mobile data, Wi-Fi, Bluetooth, cameras
5. Make sure that the sensors (gyroscope, compass) work correctly

If everything works without failures, the update was successful. Otherwise, refer to the section "Solving problems after the update."

Is it worth upgrading if the phone runs stable on Android 9?

The decision depends on your priorities:

• ✅ It's worth updating if:
  • Is important to you security (Android 11 is getting fixes vulnerabilities)
  • You use new applicationsthat require the latest version of the OS
  • You want functions like screen recording or bubble notifications
• ❌ Stay on Android 9 if:
  • Your device is not officially supportedand you don’t want to take risks with custom firmware
  • The phone is used for critical tasks (work, finance)
  • You don’t notice performance problems or application compatibility

For most users, the update is justified, but if your smartphone works flawlessly and you don't need the new features, you can stay on the current version until the end of security support.

Is it possible to update Android via a memory card?

Yes, some manufacturers (for example, Samsung or LG) support updating via external drive. To do this:

1. Download the official firmware for your model from the manufacturer's website
2. Copy the file (usually with the extension .zip or .bin) to root directory memory card
3. Insert the card into the phone and go to Settings → Software update
4. Select the option to update from an external drive (may be called Update from SD card or similar)
5. Confirm the installation and wait until the process completes

This method is useful if you have slow Internet or problems with OTA update. Make sure that the memory card is formatted in FAT32