Errors in the operation of the Android OS begin to appear.
Some applications do not open, reinstalling which does not lead to a positive result.
Some programs from the Play Market do not start.
The phone restarts for no reason.
The phone is slow.
You want to update your firmware.
Where can I find the firmware?
On the official website of the phone manufacturer.
On sites where third-party developers and phone manufacturers post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert an SD card into your phone to write the firmware to it.
Remember your smartphone model.
Fully charge your phone battery.
Find and download the archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
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, 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.
After downloading the image file, go 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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Copy the firmware and other necessary files to the SD card.
Insert a 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. 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 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 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, as well as the item 'Zip signature verification'. This item should be checked by placing a cross in the check-box, which will avoid using damaged 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.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: Size: 75.1 mm x 154.9 mm x 5.7 mm; Weight: 146 g; Frame size: 0.30 mm; Usable surface: 70 %; Materials: Metal; Colors: Gold Gray Rose-gold; Diagonal: 5.5"; Screen Type: LCD IPS; Screen Resolution: 720 x 1280 px; Density: Medium Density, 267 Pixels per inch differentiable less than 40 cm away,; Others: 100% NTSC, Capacitive, Multi-touch, NTSC; Operating System: Android 5.1 Lollipop; Model: Qualcomm Snapdragon 415 MSM8929; CPU: ARM Cortex-A53; Type: Octa-Core; Frequency: 1.4 GHz; GPU: Qualcomm Adreno 405; RAM: 2 GB; Antutu score: 31.183 (Antutu v6) Overall performance better than 63% of smartphones; Capacity: 16 GB (Capacity with the OS (depends on the brand and ROM version) ...
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