Tablet Lenovo Tab 2 series A or X (models A7-30, A8-50, A10-70, X10 etc.) still remains a popular device due to its reliability and budget price. However, over time, its performance decreases, and older versions Android (4.4 KitKat, 5.0 Lollipop or 6.0 Marshmallow) no longer support modern applications. Updating the firmware can give the tablet a “second life”, but the process has nuances - especially for devices released 5-8 years ago.

In this article we will analyze all possible update methods - from official (via OTA and Lenovo Smart Assistant) to alternative (custom firmware, manual installation via ADB). You will learn how to check the current software version, prepare the device for an upgrade, and what to do if the update freezes or the tablet stops turning on. We will also warn against typical mistakes that can turn Tab 2 into a “brick.”

⚠️ Important: Lenovo officially stopped supporting most models Tab 2 after 2018. This means that over-the-air (OTA) updates are no longer coming and new versions of Android are not being released for these devices. However, there are ways to install more recent firmware - more on that below.

1. Checking the current Android version and tablet model

Before you start updating, make sure that you know exactly your model Lenovo Tab 2 and the current firmware version. The choice of upgrade method and file compatibility depend on this.

To find out the version Android and device model:

  1. Open Settings (gear icon in the application menu).
  2. Scroll down and select About tablet (or About device).
  3. Find lines:
    • Model device (for example, Lenovo Tab 2 A10-70L).
    • Android version (for example, 5.0.1).
    • Build number (for example, A1070F_S000015_160420_ROW).

Write down this data - you will need it to find the correct firmware. Please note: models Tab 2 c suffixes F (for example, A10-70F) have a 3G modem, and without it - only Wi-Fi. Firmware for them are not interchangeable!

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If there is no “About tablet” item in the settings, try entering the code ##4636## in the "Phone" application (even if you have a Wi-Fi model). An engineering menu will open with detailed information about the device.

2. Official update methods: OTA and Lenovo Smart Assistant

If your Lenovo Tab 2 still receives updates over the air (OTA), this is the most a simple and safe way. However, as we mentioned earlier, most models are Tab 2 already not supported Nevertheless, try:

Method 1: Over-the-air update (OTA)

Connect the tablet to Stable Wi-Fi and follow these steps:

  1. Open Settings → About tablet → System update.
  2. Click Check for updates.
  3. If an update is found, follow the instructions on the screen. Make sure that the battery charge is more than 50%.

⚠️ Attention: If the tablet offers an update to Android 6.0 Marshmallow, but the current version is 4.4 KitKat, do not interrupt the process or turn off the device for 20-30 minutes after installation is completeThat's it. at this stage, the system may “freeze” at the logo Lenovo this is normal.

Method 2: Lenovo Smart Assistant (for PC)

If OTA does not work, try the official utility Lenovo Smart Assistant for Windows. It automatically finds and installs the latest firmware for your model.

Instructions:

  1. Download Lenovo Smart Assistant from official website (section “Drivers and software” for your model).
  2. Install the app on your PC and connect the tablet via USB cable (use the original cable!).
  3. Turn on tablet USB debugging (Settings → For developers. If the item is not there, activate it by clicking 7 times on Build number in the section About the tablet).
  4. Run Smart Assistant and follow the app prompts.

    5. ⚠️ Attention: The utility may not recognize the tablet if it has unofficial firmware installed or the bootloader is damaged. In this case, manual firmware will be required (see section. 5).

    📊 Which version of Android does your Lenovo Tab 2 use?
    4.4 KitKat
    5.0 Lollipop
    6.0 Marshmallow
    Other/I don’t know

    3. Preparing the tablet for updating: checklist

    Regardless of the chosen update method, preparation is a critical step. Neglecting it can lead to data loss or “bricking” the device.

    Create a backup copy of data (photos, contacts, applications)|Charge the battery up to 100%|Free up at least 2 GB of memory|Disable antivirus and firewall on your PC (if used)|Prepare the original USB cable-->

    Let's look at each point in more detail:

    Data backup

    Updating the firmware can erase all data on device. Use:

    • 📁 Google Account: synchronize contacts, calendar and notes in Settings → Accounts → Google.
    • 📷 Google Photos: automatically upload photos to the cloud.
    • 💾 Local copy: copy files to PC or MicroSD (if there is a slot).
    • 📱 Applications: use Titanium Backup (requires root) or Helium to save installed apps.

    Freeing up memory

    To install the update, you need at least 2–3 GB of free space in the internal memory Remove unnecessary files:

    • 🗑️ Clear the application cache in Settings → Applications.
    • 🎵 Transfer music and videos to a memory card (if supported).
    • 📂 Delete downloaded files from the folder Download.
What will happen if you do not free up the memory?

If there is not enough free space, the update installation will be interrupted in the middle, and the tablet may stop booting. In the best case, the system will roll back to the previous version, in the worst case, it will require flashing via a PC.

4. data-i="146">If the official methods do not work, the option remains with

If the official methods do not work, the only option left is unofficial firmware. This allows you to install a more recent version of Android (for example, LineageOS 14.1 based on Android 7.1), but requires unlocking the bootloader and having root access.

⚠️ Attention: Installing custom firmware voids the warranty. (if it is still valid) can lead to unstable operation of the device. Also, some functions (for example, camera or Wi-Fi) may not work correctly.

Step 1: Unlocking the bootloader

For most models Lenovo Tab 2 unlocking the bootloader is done through Fastboot:

  1. Install on PC Minimal ADB and Fastboot.
  2. Connect the tablet to mode Fastboot (turn off the device, then hold Volume + + Power).
  3. Enter the command: 
    fastboot oem unlock
  4. Confirm unlocking on the tablet screen (if prompted).

Step 2: Installing TWRP Recovery

TWRP is a custom recovery that allows you to install unofficial firmware. Download the TWRP version for your model from the website twrp.me and flash it through Fastboot:

fastboot flash recovery twrp.img

fastboot reboot recovery

Step 3: LineageOS or other custom OS firmware

On the forums XDA Developers or 4PDA find the firmware for your model (for example, LineageOS 14.1 for Lenovo Tab 2 A10-70Download the firmware ZIP file and GApps (Google services package).

Installation via TWRP:

  1. Copy the ZIP files to the memory card.
  2. Boot into TWRP (Volume + + Power).
  3. Execute Wipe → Advanced Wipe (check Dalvik, Cache, System, Data).
  4. Install the firmware and GApps via Install.
  5. Restart the tablet.
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Custom firmware can significantly speed up the tablet, but require technical skills. If you are not confident in your abilities, it is better to contact a specialist.

5. Manual update via SP Flash Tool (for Mediatek)

Many models Lenovo Tab 2 (for example, A7-30, A8-50) are built on processors Mediatek. Firmware is suitable for them through SP Flash Tool - a utility for working with chips MTK.

⚠️ Attention: This method erases all data and can lead to loss IMEI (for models with 3G). Use it only if other methods do not work.

What you will need:

  • 🖥️ PC with Windows (7/10/11).
  • 🔌 Original USB cable.
  • 📄 Firmware in format .scatter (download only from trusted sources!).
  • 🛠️ Utilities: SP Flash Tool, drivers Mediatek VCOM.

Step-by-step guide:

  1. Install drivers VCOM (download from spflashtool.com).
  2. Unpack the firmware into a folder (there should be a file MTxxxx_Android_scatter.txt).
  3. Run SP Flash Tool, click Scatter-loading and select scatterfile.
  4. Tick all sections (except PRELOADERif you are not sure!).
  5. Press Download, connect turned off the tablet to the PC.
  6. Wait for the process to complete (a green circle will appear).

If after firmware, the tablet does not turn on, try:

  • 🔄 Repeat the process with a different firmware version.
  • 🔋 Hold the power button for 30+ seconds (sometimes it helps when it gets stuck on the logo).
  • 🛠️ Flash only System and Boot (without Userdata).
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If the SP Flash Tool gives the error "PMT changed for the ROM", then the firmware is not suitable for your model. Immediately turn off the tablet and find another file!

6. Firmware compatibility table for Lenovo Tab 2

The following are proven firmware options for popular models. Lenovo Tab 2The data is current at the time of publication, but always check the latest discussions on forums (for example, 4PDA or XDA).

Tablet model Latest official version of Android Possible custom firmware Notes
Lenovo Tab 2 A7-30 (Wi-Fi/3G) 5.0 Lollipop LineageOS 12.1 (Android 5.1) 3G modem is unstable
Lenovo Tab 2 A8-50 (Wi-Fi/3G) 5.0 Lollipop LineageOS 14.1 (Android 7.1), AOSP 6.0 Requires a patch for the camera
Lenovo Tab 2 A10-70 (Wi-Fi/3G) 6.0 Marshmallow LineageOS 14.1, Resurrection Remix Best support among Tab 2 models
Lenovo Tab 2 X10 5.0 Lollipop CM12.1 (Android 5.1) No stable versions above 5.1

⚠️ Attention: Firmware for Tab 2 with processors Intel Atom (for example, Tab 2 A10-80) are not compatible with firmware for Mediatek! Check the processor type in the device characteristics.

7. Solving problems after the update

Even if the update was successful, problems may occur. Let's look at typical situations and how to fix them.

The tablet does not turn on or freezes on the logo

Causes and solutions:

  • 🔋 Battery is low: connect to charger for 30+ minutes, then try turn on.
  • 🔄 Incompatible firmware: flash the original version via SP Flash Tool or Lenovo Smart Assistant.
  • 🛠️ Damaged bootloader: flashing required with a checkmark PRELOADER (risky!).

Touchscreen does not work after update

This is a typical problem for custom firmware on Lenovo Tab 2Solutions:

  • 🔧 Reflash the firmware with disabled item EBR1/EBR2 v SP Flash Tool.
  • 📥 Find the firmware marked "fixed touch" on forums.
  • 🔄 Return to the official firmware.

Wi-Fi or Bluetooth do not work

For custom firmware:

  • 📶 Install a patch for Wi-Fi (search on 4PDA in the theme of your model).
  • 🔄 Reboot the tablet into recovery and clear the cache (Wipe Cache).
What to do if the tablet overheats after the update?

Overheating may be caused by unoptimized firmware or background processes. Try:

1. Install the application Coolify to control the temperature.

2. Roll back to the previous version of the software.

3. Reset the settings to factory settings (Settings → Recovery and reset).

If the problem persists, most likely the thermal paste on the processor has dried out (disassembling the device is required).

8. Frequently asked questions (FAQ)

Is it possible to update Lenovo Tab 2 to Android 10 or 11?

No, officially this is not possible. The maximum that is available for most models is through custom firmware (for example, Android 7.1 through custom firmware (for example, LineageOS 14.1). Newer versions of Android require support from the processor and drivers, which are not available for Tab 2.

I lost data after updating. restore them?

If you did not make a backup, the chances are low. Try:

  • 📱 Data recovery apps (DiskDigger, Recuva) - if the tablet turns on.
  • 💾 Connect the memory card to the PC and check it for files.
  • ☁️ Check cloud services (Google Photos, Drive) - the data may have been synchronized automatically.

After the update, the tablet began to slow down. What should I do?

Causes of slowdowns and solutions:

  • 🧹 Cache and garbage: clean through Settings → Memory or CCleaner.
  • 🔄 Incompatible firmware: roll back to the previous version.
  • 🔋 Weak processor: disable animation in Settings → For developers (set animation scale 0.5x).

How do I know which firmware is suitable for my model?

Check with characteristics:

  • 📋 Exact name of the model (for example, Lenovo Tab 2 A10-70F).
  • 🔧 Type of processor (Mediatek or Intel Atom).
  • 📡 Availability of a 3G modem (models with F in the name, for example, A8-50F).

Look for firmware on 4PDA or XDA Developers, reading user reviews with the same model.

Is it possible to update a tablet without a computer?

Yes, but with reservations:

  • ✅ OTA update: if it is still available for your model.
  • ✅ Local firmware via recovery: download the firmware ZIP file to a memory card and install via TWRP (pre-unlock bootloader required).
  • ❌ SP Flash Tool and ADB: require PC.