Flash firmware on Kenxinda R7S
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How to flash Kenxinda R7S?
Why reinstall the firmware?
Errors in the Android OS start to appear regularly.
Some applications stop opening.
Some programs from the Play Market do not start.
The phone restarts for no reason.
The phone is slow.
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 resources where users post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Find information about your smartphone model.
Fully charge your device's 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. And install it.
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, 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.
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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
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 SD card. Using a PC or laptop card reader, it will be much faster.
Insert a 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. This will delete all user data from the device, but avoid a wide range of 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 location where you copied the files..
Select the firmware file 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 device's memory will begin, accompanied by the appearance of inscriptions in the log field and the completion of the progress bar.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: Design: Classic; DualSIM mode: yes; SIM cards standard: Nano Sim / Nano Sim; GSM: 850 900 1800 1900; HSDPA: 850 900 1900 2100 HSPA; LTE: 700 800 1800 2100 2600; Dimensions (H/L/W): 150.2 x 76.3 x 6.9 mm, vol. 79.1 cm³; Display: LCD IPSColor (16M) 1080x1920px (5.5") 401ppi; Protection LCD: Corning Gorilla Glass 3; Touch screen: yes; Battery: Li-Ion 2650 mAh; Non-removable battery: yes; Built-in memory: 16 GB; Memory card: MicroSD; RAM memory: 2 GB; Operating system: Android 5.1; Chipset: MediaTek MT6753; CPU 1: ARM Cortex A53; CPU 1 frequency: 1300.0 MHz(8-core); GPU Type: ARM Mali-T720 MP3; GPU frequency: 450.0 MHz(3-core); GPRS: yes; EDGE: yes; HSDPA: 21 Mb/s; ...
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