Flash firmware on Teclast M40
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How to flash Teclast M40?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some installed applications stop opening.
Many programs from the Play Market do not work.
The phone restarts by itself for no 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 phone manufacturer.
On sites where developers post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of 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 phone. If the battery runs out during boot, the device will no longer turn on.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App via the Play Market. And run this application.
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.
On the next screen, select 'TWRP FLASH' and give the application root rights.
On the main screen of the application, click on the 'Select Device' drop-down list, and select your phone model.
After selecting a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.img file.
After downloading the image file, 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.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Write the firmware to the SD 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 appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where the files were copied. Press the 'OK' button.
Select the firmware file 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: OS: Android 10; Processor: Unisoc T618; Processor clock: 2.00 GHz; Number of cores: 8; GPU: ARM Mali G52 MP2; RAM: 6 GB; Internal memory: 128 GB; Memory cards: yes; microSD, microSDHC, microSDXC (up to 256 GB); Display: Color / IPS TFT; 16M colors, 60 Hz; 1200 x 1920 px (10.10") 224 ppi; 74.7% screen-to-body ratio; Display protection: yes; Type: Standard; Photo matrix: 8 Mpx; Flash: yes; Video formats: H.263, H.264, MPEG4; Additional: AF; Type: Portrait; Photo matrix: 5 Mpx; Flash: yes; Additional: FF; A-GPS: yes; GPS module: yes; Bluetooth: yes v5.2; EDGE: yes; GPRS: yes; Galileo: yes; GLONASS: yes; Beidou: yes; IrDA: yes; NFC: yes; USB: yes v2.0; Type-C; WAP: yes v2.0; WiFi: yes v802.11 a ...
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