Flash firmware on Verykool Lynx III s3502
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How to flash Verykool Lynx III s3502?
Why reinstall the firmware?
The operating system keeps getting errors.
Some applications stop opening.
Many applications from the Play Market do not start.
The phone restarts or shuts down by itself.
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 website of the manufacturer.
On specialized services on which various developers lay out custom or official OS.
What should be done before installing the firmware?
Create a backup copy of all personal information: contacts, photos and transfer it to another computer.
Insert an SD card into your phone to write the firmware to it.
Determine your smartphone model.
Fully charge your device's battery.
Download 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.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click '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.
Now 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.
Transfer the firmware and other necessary files to the SD card.
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 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.
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. Press the OK button.
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, 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: OS: Android (4.4); CPU: Dual-core, 1300 MHz, ARM Cortex-A7; System chip: MediaTek MT6571; RAM: 0.25GB; GPU: ARM Mali-400; Size: 3.5 inches; Resolution: 480 x 320 pixels, 165 PPI; Technology: TFT; Touchscreen: Capacitive, Multi-touch; Colors: 16 777 216; Screen-to-body: 51.15 %; Features: Ambient light sensor, Proximity sensor; Internal storage: 0.512GB; Storage expansion: microSDHC up to 32 GB; Main camera: 2 MP; Front: 1.3 MP; Rear: Single camera; Video recording: Yes; Dual SIM: Yes; Bluetooth: 4.0; GPS: GPS, A-GPS; USB: microUSB, USB 2.0; Wi-Fi: 802.11 b, g, n; Hotspot; Other: Tethering, Computer sync, OTA sync; Headphones: 3.5mm jack; Speakers: Earpiece, Loudspeaker; Radio: FM; Features: ...
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