Flash firmware on Alcatel 3L 2021 Dual SIM
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How to flash Alcatel 3L 2021 Dual SIM?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some installed applications do not open.
Many applications from the Play Market do not start.
The phone restarts or shuts down by itself.
The phone started to work slowly.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the official website of your phone manufacturer.
On Internet resources where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of all personal information: contacts, photos and transfer it to another computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Download 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 agree to install the firmware, as well as agree to grant the application Superuser rights and click the 'OK' button.
After moving to the next screen, you need to select the 'TWRP FLASH' item 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 application will direct the user to a web page to download the appropriate modified recovery environment image file. 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. Then we tell the program the path where the file loaded in the previous step is located.
Now press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Copy the necessary files to the SD 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 delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
Now you can start flashing. Press the 'Install' button.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the location where you copied the files.
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 damaged files during recording.
The procedure for flashing the phone will begin, 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 11; Processor: MediaTek Helio A25 MT6762D; Processor clock: 1.80 GHz; Number of cores: 8; GPU: ARM Mali-T880 MP2; RAM: 4 GB; Internal memory: 64 GB; Memory cards: yes; microSD, microSDHC, microSDXC (up to 512 GB); Display: Color / IPS TFT; 16M colors, 60 Hz; 720 x 1600 px (6.52") 269 ppi; 82.0% screen-to-body ratio; Display protection: yes; Type: Standard; Photo matrix: 48 Mpx; Sensor size: 1/2; Flash: yes LED; Digital zoom: yes; Number of lenses: 6; Video formats: H.264, MPEG4 - 30 fps; Video resolution: 1920x1080; Additional: AF, EIS, f/1.8; Type: Portrait; Photo matrix: 8 Mpx; Sensor size: 1/4; Flash: yes; Digital zoom: yes; Video resolution: 1920x1080; Additional: FF, f/2.0; ...
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