Errors in the operation of the Android OS begin to appear.
Some installed applications stop opening.
Some programs from the Play Market do not start.
The phone restarts or shuts down for no reason.
The phone began to slow down a lot.
You want to update your firmware.
Where can I find the firmware?
On the official website of the phone manufacturer.
On specialized resources where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data and transfer it to another medium.
Insert an SD card into your phone to write the firmware to it.
Remember your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
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. Download, install and launch the application..
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.
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 device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.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. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm that you are ready to start the procedure - press 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Copy the required files to the SD card. Using a PC or laptop card reader, it will be much faster.
Insert a memory card into the device.
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 appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files..
Find the file we need 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: GSM frequencies: 900 1800; Standard UMTS: 900 2100; Standard LTE: FDD LTE: 850, 1800TDD LTE: 2300; Type: Touch; Dimensions (W x H x D): 145.00 x 72.00 x 9.20 mm; Weight: 160.00 g; Main display: Color / TFT16M colors480 x 854 px (5.00") 196 ppi; Display protection: no; Standard battery: Li-Ion 2350 mAh; Quick battery charging: no; Internal memory: 8 GB; RAM memory: 1 GB; Memory cards: yes, microSD, microSDHC (up to 32 GB); Operating system: Android 6.0 Marshmallow; Processor: -; Processor clock: 1.30 GHz; Touchscreen: yes; DualSIM: yes; DualSIM mode: -; Hybrid DualSIM: no; Announced: 3Q 2016; Camera location: Back; Photo matrix: 5 Mpx; Flash: y ...
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