The phone shuts down and restarts for no apparent reason.
The phone is slow.
The OS does not match the system requirements of the smartphone.
Where can I find the firmware?
On the official website of the manufacturer.
On specialized services where users post custom or official OS.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to another medium.
Insert an SD card into your phone to write the firmware to it.
Find information about your smartphone model.
Fully charge your device's battery.
Find and download the archive with Firmware.
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 must consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press 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, select 'Select Device', and find 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.
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.
After adding the image file to the program, click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK'.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Copy the required files to the memory card. Using a PC or laptop card reader.
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. Click 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 storage to which the files were copied.
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: Operating system: Android 10, OxygenOS 10.0; Processor: Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585); Chipset: Qualcomm SM8250 Snapdragon 865 (7 nm ); GPU: Adreno 650; Internal memory: 128GB 8GB RAM; External memory: No; Type: Fluid AMOLED capacitive touchscreen, 16M colors; Size: 6.55 inches, 103.6 cm 2; Resolution: 1080 x 2400 pixels, 20:9 ratio; Body: IP68 dust/water resistant (up to 2m for 60 mins); Body build: Glass front, glass back (Gorilla Glass 5), aluminum frame; SIM: Pre-installed Nano-SIM; Dimensions: 160.2 x 72.9 x 8 mm (6.31 x 2.87 x 0.31 in); Weight: 180 g (6.35 oz); Colors: Onyx Black, Polar Silver; 2G Network: GSM 850 / 900 / 1800 / 1900; 3G Ne ...
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