Owners of brand tablets Wexler often face a situation when the device stops receiving automatic notifications about a new version of the operating system. This is due to the fact that the company does not always promptly release official patches for its models, especially those that were released several years ago. However, the absence of a notification in the settings menu does not mean that the device cannot be upgraded.
The firmware update process on tablets from this manufacturer has its own technical features that differ from standard procedures on flagship smartphones. To successfully install the new version Android you must clearly understand the device architecture, processor type and available installation methods. In this article we will look at all possible methods, from simple OTA updates to manual flashing via a computer.
Before taking active steps, it is critically important to assess the risks. Any intervention in the system partition carries the potential threat of turning the tablet into a “brick”. If your device is stable and performs all the necessary functions, you may want to refrain from experimenting. But if you observe slowdowns, application incompatibility or security errors, the update procedure will be the only correct solution.
Preparing the device and checking the current version
The first step before any manipulation is a thorough diagnosis of the current state of the system. You need to know exactly the model of your tablet, since the firmware for Wexler Tab T7200 will not be suitable for the model T7000, despite the external similarity. Information about the exact modification is often hidden under the back cover or in the system menu.
Go to settings and find the section About the tablet. The build number and kernel version are displayed here. Write down this data, they will be useful when searching for a suitable image file on specialized forums. Also check the amount of free internal memory: downloading and unpacking the update may require from 1 to 3 GB of free space.
⚠️ Attention: Before starting the procedure, be sure to back up all your personal data. When updating via Recovery mode or using a PC, user data (photos, contacts, messages) will be completely deleted without the possibility of recovery.
Make sure that the battery level is at least 60-70%. The firmware process is energy-consuming, and a sudden power outage while writing system partitions can lead to irreversible damage to the bootloader. Connect the tablet to the network via the original charger, even if you plan to update offline.
☑️ Ready for firmware
Official update method over the air (OTA)
The safest and easiest way to get a new version of the software is to use the built-in update mechanism. The manufacturer includes the ability to check servers for new builds directly into the system interface. This method does not require a computer or special knowledge.
To start the scan, go to menu Settings, then select item About device or System. Find the line System update or Software update. Click the "Check for updates" button. If the company's server Wexler contains the current assembly for your serial number, the system will offer to download the package.
However, it is worth considering the specifics of the budget electronics segment. Often support servers for older models are turned off 1-2 years after release. In this case, the system will report that “The latest version is installed,” even if in reality there is a more recent Android. This is not an error, but the limit of support from the vendor.
If the update button is inactive or shows a network error, try changing the DNS in the Wi-Fi settings to 8.8.8.8 (Google) - sometimes this helps connect to the update server.
If the update is successfully detected, the download will begin. Do not interrupt this process or actively use the tablet. After downloading, the system will prompt you to reboot for installation. The screen may go dark for several minutes, and the device may reboot several times - this is normal behavior when applying patches.
Manually installing updates via Recovery Mode
If the automatic search does not produce results, you can try the method of manually installing a system image through the recovery menu. This method requires first searching for a firmware file in the .zipformat designed specifically for your tablet model. The files are usually distributed on thematic forums by enthusiasts.
Copy the found archive with the firmware to the root directory of the tablet’s internal memory or to a microSD card. Avoid placing the file in deep folders to make recovery mode easier to navigate. After this, you need to turn off the device and boot into a special mode.
The key combination to enter Recovery Mode on Wexler tablets is most often the following: hold down the volume up button (Volume Up) and the power button (Power) at the same time. Hold them until the Android logo or menu appears. On some models, you may need to use the button Home instead of the volume.
What to do if the Recovery menu does not open?
If the standard key combination does not work, your device may have a locked bootloader or a modified version of the recovery. Try connecting the tablet to the PC and using ADB commands to reboot into recovery mode: adb reboot recovery.
In the menu that appears, control is carried out with the volume buttons (up and down), and the choice is confirmed with the power button. You need to find the item Apply update from SD card or Apply update from internal storage. Select the previously copied zip file and confirm the installation.
⚠️ Attention: Make sure that the downloaded firmware is designed specifically for your processor (Rockchip, Allwinner or MediaTek). Installing an image from another chipset is guaranteed to disable the device.
After completing the process, which may take from 3 to 10 minutes, select Reboot system now. The first boot after manual flashing usually takes longer than usual as the system optimizes applications and creates new cache files. Be patient and do not press the buttons at this moment.
Firmware via a computer using the SP Flash Tool
For owners of processor-based devices MediaTek (which is typical for many Wexler models), the most powerful tool is the utility SP Flash Tool. This method allows you to completely overwrite memory sections, which is useful not only for updating, but also for restoring broken tablets.
You will need a computer running Windows, a USB cable with good contact and drivers MediaTek VCOM. Without correctly installed drivers, the computer will not see the tablet in firmware mode. Download the archive with the firmware (Scatter-rom), which contains the file MT65xx_scatter.txt.
Run SP Flash Tool as administrator. In the Scatter-loading File field, specify the path to the text file from the firmware archive. In the list of sections, make sure that all the necessary items are checked, especially system, boot and recovery. It is better to leave the firmware mode Download Onlyin order not to affect the section with personal data, if possible, although for a clean update it is often recommended Firmware Upgrade.
| Parameter | Value / Description | Importance |
|---|---|---|
| Mode firmware | Download Only / Firmware Upgrade | High |
| Drivers | MediaTek Preloader VCOM | Critical |
| Cable | Original USB, length up to 1m | Medium |
| Power | Battery > 50% or disabled (depending on model) | High |
Press button Download in the app. Only after this, connect the switched off tablet to the computer. If everything is done correctly, a color progress bar will appear. The red bar means initialization, the yellow bar means the recording process, and the green check mark indicates successful completion.
The SP Flash Tool method is the most reliable, but requires the installation of specific drivers. An error at the driver stage is the most common cause of failure with this method.
Searching and selecting compatible firmware
The main difficulty in updating old Wexler tablets is finding authentic software. The manufacturer's official website often does not contain archives for discontinued models. In this case, you have to turn to the developer community and specialized resources.
When searching, pay attention to the date of publication of the file and user comments. Firmware that did not run for other owners of your model will most likely not work for you either. Look for files marked Stock ROM, which means the original factory firmware, and not modified by enthusiasts.
You can often find custom firmware (Custom ROM), for example, on the base LineageOS. They may give you a newer version of Android than the official one. However, installing such systems requires unlocking the bootloader and installing a custom recovery (TWRP), which significantly complicates the process and increases risks.
Check the integrity of the downloaded files. If the archive is damaged during download, the firmware process will be interrupted in the middle, which may lead to errors. Use checksums (MD5 or SHA-1) if the firmware author provided them in the description.
Possible problems and ways to solve them
Even if you strictly follow the instructions, unforeseen situations may arise. One of the most common problems is the “bootloop”, when the tablet endlessly reboots at the logo. This often happens if data from the old firmware conflicts with the new system.
To solve this problem, you need to enter Recovery mode and perform a factory reset. Select Wipe data/factory reset, confirm the action, and then select Wipe cache partition. This will delete all user data, but often allows the system to start correctly.
Another common error is the lack of communication with the PC when using the SP Flash Tool. In this case, try another USB port (preferably USB 2.0, located on the rear panel of the system unit), replace the cable or reinstall the drivers in the device manager, deleting old entries before reinstalling.
⚠️ Attention: The Recovery menu interfaces and item names may vary slightly depending on the version of Android and the chipset manufacturer. Always carefully read the inscriptions on the screen before confirming your actions.
If the tablet has stopped responding to buttons and is not detected by the computer, you may need a “Hard Reset” procedure by closing the contacts on the board (test point), but this already refers to complex hardware repairs and requires soldering skills.
Frequently asked questions (FAQ)
Is it possible to update the Wexler Tab to the latest version of Android 13 or 14?
Extremely unlikely. Wexler tablets are usually based on budget processors, whose manufacturers do not release drivers for new versions of Android. Officially, support is limited to the version with which the device was sold, or one major update. The transition to Android 13+ is only possible through unofficial custom firmware, if they exist for your specific model.
What should you do if, after the update, the tablet starts to slow down a lot?
This phenomenon is called a “cache conflict”. After a major system update, old temporary files can slow things down. It is recommended to perform a full data reset (Factory Reset) immediately after successfully installing the new firmware. Also check if the application optimization process is running in the background, which can last up to an hour after the first boot.
All applications disappeared after the update, is this normal?
If you updated via a computer in mode Firmware Upgrade or did a reset via Recovery, deleting all data is the normal behavior of the procedure. You will have to reinstall the apps from Google Play. When updating over the air (OTA), the data is usually saved.
Where can I find drivers for the Wexler Tab if they are not on the website?
Drivers do not depend on the brand of the tablet, but on the type of processor. Determine the chipset (via the CPU-Z application or by model on the Internet) and download universal drivers: for MediaTek, look for “MTK VCOM Drivers”, for Rockchip - “Rockchip Driver Assistant”, for Allwinner - “PhoenixSuit”.