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Flash firmware on Blackview BV4000

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How to flash Blackview BV4000?


Why reinstall the firmware?

Errors periodically appear in the Android operating system.

Some installed applications do not open.

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 have decided to try a different version of Android.





Where can I find the firmware?

On the official Internet resource 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?

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.

Find out the exact model of your smartphone.

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. 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.

After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.

TWRP

On the main screen of the application, click on the 'Select Device' drop-down list, and select 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.

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.

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 firmware and other necessary files to the SD card.

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. Open the menu and select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button.





Firmware via TWRP

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.

Press the 'Install' button to start the flashing.


TWRP

The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.

Select the location where the files were copied. Press the OK button.



TWRP

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.

After completing the installation procedure, a 'Successful' message appears on the screen.





Summary: Type: Smartphone; Smart Phone OS: Android; OS ver: Android 7.0 (Nougat); SIM: Dual SIM; CPU: MediaTek MT6580A Quad Core; Processor Speed: 1.3 GHz; Storage: 8GB; RAM: 1GB; External Storage: MicroSD Upto 128 GB; Battery: Li-Po 3680 mAh,Standby: 350 Hrs (Unofficial)Talk Time: 18 Hrs (Unofficial)Music Play: Up to 48 Hrs; Screen Size: 4.7 inches; Resolution: HD (720 x 1280 pixels); Main Camera: 8 MP 2 MP; Front Camera: 5 MP (Expected); Features: WiFi , GPS , Bluetooth , Flash, Waterproof; ...

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