Flash firmware on VG V686
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How to flash VG V686?
Why reinstall the firmware?
Errors start to appear in the operating system.
Apps won't open.
Some applications from the Play Market do not start.
The phone turns off for no apparent reason.
The phone slows down a lot during operation.
The OS does not match the system requirements of the smartphone.
Where can I find the firmware?
On the website of your phone manufacturer.
On sites 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 your computer.
Insert an SD card into the gadget. It must have enough memory for the firmware.
Find information about your smartphone model.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Find and download the archive with Firmware. And place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App via the Play Market. And run this application.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press the 'OK' button.
On the next screen, you need to select the 'TWRP FLASH' item and give the application root-rights.
On the main screen of the application, select 'Select Device', and find your phone model.
After selecting the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. 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.
Now press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
The recording process is very fast, and upon completion, 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. 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, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
Now you can start flashing. Click the 'Install' button.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the location where the files were copied.
Select the firmware file 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 damaged files during recording.
The procedure for writing files to the phone's memory will begin, accompanied by logging and filling in the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: Type: Mobile; Battery: Li-Ion; CPU: MediaTek MT6735M; Smart Phone OS: Android 5.1; Formfactor: Bar; Keyboard: Screen; Sidekeys: Volume, Power; Softkeys: 3; Color: Yes; Colors: 16M; Other: Capacitive Touchscreen, Multitouch; Pixel aspect ratio: 1.50; Resolution: 360x640; Display PPI: 220; Screen Size: 5; Type: IPS; Audio: AAC, AAC+, AMR, AWB, MP3, Vorbis, FLAC, APE, MIDI, WAV; Camera: 2MP, 1600x1200; Other: CMOS Sensor, Macro Mode, Digital Zoom, Scene Mode, Video Calling; Secondcamera: 0.3MP, 640x480; Videocapture: YES, VGA@30fps; Videoplayback: AVI, RM, RMVB, MP4, MKV, WMV, MOV, DAT, VOB, PMP, MPEG, MPG, FLV, ASF, TS, TP, 3GP; Connectors: 3.5mm Audio, MicroUSB 2.0; ...
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