Some applications do not open, reinstalling which does not lead to a positive result.
Many applications from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone started to work slowly.
The OS does not match the system requirements of the smartphone.
Where can I find the firmware?
On the website of your phone manufacturer.
On specialized services on which various developers lay out custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Find information about your smartphone model.
Fully charge your device.
Download Firmware and Place it on the SD card.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
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.
On the next screen, you need to select the 'TWRP FLASH' item and give the application root-rights.
On the main screen of the application, select 'Select Device', and find your phone model.
After selecting a phone, the application will direct 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'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Transfer the firmware and other necessary files to the SD card.
Insert a memory card into your 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. We open the menu, select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.
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. Click the 'Install' button.
The file selection screen is displayed. At the very top is the 'Storage' button, which allows you to switch between types of memory.
Select the storage to which 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, accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: OS: Android 9.0 (Pie); CPU: Octa-core 2.0 GHz Cortex-A53; GPU: Mali-G71; Type: IPS LCD capacitive touchscreen, 16M colors; Screen Size: 6.4 inches, 100.5 cm 2 (~85.5% screen-to-body ratio); Resolution: 720 x 1560 pixels, 19.5:9 ratio (~268 ppi density); Card slot: microSDXC (dedicated slot); Internal: 32GB 2GB RAM; Loudspeaker: Yes; 3.5mm jack: Yes; WLAN: Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot; Bluetooth: 4.0, A2DP; GPS: Yes, with A-GPS; Radio: FM radio; USB: 2.0, Type-C 1.0 reversible connector; Sensors: Fingerprint (rear-mounted), accelerometer, proximity; Removable Li-Po 4000 mAh battery; Dimensions: 156.8 x 75 x 8.6 mm (6.17 x 2.95 x 0.34 in); Weight: 182 g (6.42 oz); SIM: Dual SIM ...
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