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Flash firmware on Cayon A7

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How to flash Cayon A7?


Why reinstall the firmware?

Errors begin to appear in the Android operating system.

Some applications stop opening.

Some programs from the Play Market do not start.

The phone restarts by itself for no reason.

The phone began to slow down a lot.

You are not satisfied with the functionality of the stock firmware.





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?

Create a backup copy of user data and transfer it to your computer.

Insert an SD card into your phone to write the firmware to it.

Find out the exact model of your smartphone.

Fully charge your device's battery.

Find and download the archive with Firmware. Place it on the SD card.





Installing TWRP Recovery

Install the Official TWRP App from the Play Store on your phone. And run this 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.

In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.

TWRP

On the main screen of the application, the 'Select Device' drop-down list is available, in which you need to find and select the device model for installing the recovery.

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.

When 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 SD memory card into the phone.

To reboot in recovery, it is convenient 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 tap on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.





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.

Everything is ready to start flashing. Press the 'Install' button.


TWRP

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..



TWRP

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 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 installation procedure is indicated by the inscription 'Successful'.





Summary: OS: Android 4.4.2 KitKat; CPU frequency: 1300.0 MHz; RAM Memory: 512.0 MB; Display: TFT Color (16M), 480x1024 px (4.0") 283ppi; Touch screen: yes; Built-in memory: 4 GB; Memory card: MicroSD/TransFlash max. 16 GB; Camera: 0.3 MPx; Flash: no; Autofocus: no; Optical zoom: no; Digital zoom: yes; Bluetooth: yes; EDGE: yes; GPRS: yes; GPS: no; A-GPS: no; LTE: LTE-TDD: 1900, 2300, 2600; GSM: 900 1800 1900; HSDPA: HSPA; USB: 2.0; WAP: 2.0; Wi-Fi: yes; Audio out: Jack 3,5 mm; Games: yes; MP3 player: yes; MP3 ringtones: yes; Polyphony: yes; Radio: yes; RDS: yes; RSS: yes; Vibra: no; Dictaphone: yes; Loudspeaker: yes; Dual SIM: yes; SIM card size: Mini Sim, Mini Sim; Dimensions: 123 x 64.6 x 10 mm, v ...

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