Flash firmware on Teclast X98 Air 3G
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How to flash Teclast X98 Air 3G?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some applications stop opening.
Many programs from the Play Market do not start.
The phone turns off for no apparent reason.
The phone is slow.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the official website of the manufacturer.
On specialized services where users post custom or official OS.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to your computer.
Insert an SD card into your phone to write the firmware to it.
Determine your smartphone model.
Fully charge your device's battery.
Find and download the archive with Firmware.
Installing TWRP Recovery
Download the Official TWRP App to your phone from the Play Market. And install this app.
When you start the application for the first time, you must consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press the 'OK' button.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click on the 'Select Device' drop-down list, and select your phone model.
After selecting the phone, the application will redirect the user to a web page to download the modified recovery environment image file. Download the proposed *.img file.
When the file is loaded, you need to return to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Copy the required files to the memory card. Using a PC or laptop card reader.
Insert a SD memory card into the phone.
To reboot into recovery, you need to use a special item in the Official TWRP App menu, accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Open the menu and select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button.
Firmware via TWRP
Before flashing, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. You will delete all user data from the phone, this will avoid software errors and other problems.
Now you can start flashing. Press the 'Install' button.
The file selection screen is displayed. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the storage to which the files were copied.
Find the file we need and click on it. A screen opens with a warning about possible negative consequences, you need to check the item 'Zip signature verification', which will avoid using corrupted files when writing to the phone's memory sections.
The procedure for writing files to the phone's memory will begin, this is accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Operating System: Android v4.4 (Kitkat); SIM Slot(s): Single SIM, GSM; Network: 3G: Available, 2G: Available; Dimensions: 240 (H) x 169 (W) x 7.4 (T) mm; Weight: 498 grams; Colours: Gold Silver; Screen Size: 9.7 inches; Screen Resolution: 1536 x 2048 pixels; Pixel Density: 264 ppi; Display Type: IPS LCD; Touch Screen: Capacitive Touchscreen, Multi-touch; Chipset: Intel Atom Z3736F; Processor: Quad core, 2.16 GHz; Architecture: 64 bit; Graphics: Intel HD Graphics; RAM: 2 GB; Internal Memory: 64 GB; Expandable Memory: Up to 128 GB; Resolution: 5 MP; Image Resolution: 2592 x 1944 Pixels; Camera Features: Digital Zoom; Video Recording: 1920x1080 @ 30 ...
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