Errors periodically appear in the Android operating system.
Some applications stop opening.
Many programs from the Play Market do not work.
The phone turns off for no apparent reason.
The phone began to slow down a lot.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official website of the manufacturer.
On sites where developers 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 your SD card into your phone. An SD card is needed to write firmware to it.
Find out the exact model of your smartphone.
Fully charge your device's battery.
Download archive with Firmware. Place it on the SD card.
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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click 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.
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, press 'OK'.
When 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 delete all user data from the phone, this will avoid errors in the software, as well as other problems. Press 'WIPE' on the home screen.
Press the 'Install' button to start the flashing.
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 location where the files were copied. Press the 'OK' button.
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 flashing the phone 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 v8.1 (Oreo); Sim slots: Dual SIM, GSM GSM; Sim size: SIM1: Nano SIM2: Nano (Hybrid); Network: 4G: Available 3G: Available, 2G: Available; Display type: TFT; Aspect ratio: 18: 9; Pixel density: 201 ppi; Screen size: 5.34 inches (13.56 cm); Screen resolution: 480 x 960 pixels; Touch screen: Yes Capacitive Touchscreen, Multi-touch; Loudspeaker: Yes; Audio jack: 3.5 mm; Camera features: Digital Zoom; Image resolution: 2592 x 1944 Pixels; Shooting modes: High Dynamic Range mode (HDR); Resolution: 8 MP Front Camera; Flash: Yes LED Flash; Internal memory: 16 GB; Expandable memory: Yes Up to 128 GB; Usb otg support: Yes; Sensors: Light sensor, Proxi ...
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