Errors in the Android OS start to appear regularly.
Some installed applications do not open.
Many programs from the Play Market do not start.
The phone turns off for no apparent reason.
The phone began to slow down a lot.
You want to update the firmware, as it does not suit you in terms of functionality.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On specialized services on which developers lay out 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 information about your smartphone model.
Fully charge your phone battery.
Download the archive with Firmware and 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.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
On the main screen of the application, click 'Select Device', and find 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.
When the file is loaded, 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 and other necessary files to the SD card. Using a PC or laptop card reader, it will be much faster.
Insert a SD memory card into the phone.
To reboot into recovery, you need to enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. 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 errors in the software, as well as other problems. Press 'WIPE' on the home screen.
Now you can start flashing. Click the 'Install' button.
The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.
Select the location where you copied the files. 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.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: GSM frequencies: 900 1800 1900; Standard UMTS: 900 2100; Standard LTE: FDD LTE: 700, 800, 1500, 1700, 2100; Type: Touch; Waterproofness & dust-resistance: IP55, IP58; Dimensions (W x H x D): 145.00 x 74.00 x 9.50 mm; Weight: 168.00 g; Main display: Color / IPS TFT16M colors1440 x 2560 px (5.20") 565 ppi; Display protection: Corning Gorilla Glass 3; Talk time (max.): 2G: 780 min. (13.0 h)3G: 780 min. (13.0 h); Stand-by (max.): 2G: 670 h (27.9 days)3G: 850 h (35.4 days)4G: 670 h (27.9 days); Standard battery: Li-Ion 3500 mAh; Quick battery charging: no; Internal memory: 32 GB; RAM memory: 3 GB; Memory cards: yes, microSD, microSDHC, microSDXC (up to 128 GB); ...
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