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Flash firmware on Asus ZenFone 3 5.2 ZE520KL

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How to flash Asus ZenFone 3 5.2 ZE520KL?


Why reinstall the firmware?

Errors start to appear in the operating system.

Some installed applications do not open.

Many programs from the Play Market do not start.

The phone restarts or shuts down for no reason.

The phone is slow.

The OS does not match the system requirements of the smartphone.





Where can I find the firmware?

On the official website of your phone manufacturer.

On specialized services on which developers lay out 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 information about your smartphone model.

Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.

Download the archive with Firmware and 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 must consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press the 'OK' button.

After moving to the next screen, you need to select the 'TWRP FLASH' item and give the application root rights.

TWRP

On the main screen of the application, select 'Select Device', and find 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.

When the file is loaded, 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.

Press the 'FLASH TO RECOVERY' button and confirm that you are ready to start the procedure - press '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..

Write the firmware and other necessary files to the SD card. Using a PC or laptop card reader, it will be much faster.

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

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.

Now you can start flashing. Click the 'Install' button.


TWRP

On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.

Select the location where you copied the files. 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.

The completion of the firmware installation procedure is indicated by the inscription 'Successful'.





Summary: Colors: Blue, Black, White, Golden; Dimensions: 146.87 x 73.98 x 7.69 mm; Weight: 144g; Type: IPS LCD Capacitive TouchScreen (Super IPS Technology,600 nits Brightness,Blue Filter); Display Colors: 16M Colors; Size: 5.2 Inch; Screen-to-body ratio: ~75.6% screen-to-body-ratio; Resolution: 1080 x 1920 pixels; Pixel Density: ~424 ppi; Protection: Corning Gorilla Glass, 4 (2.5D Curved Glass); Primary: 16 Megapixels 4608 x 3456 Pixels; Flash: Dual-LED Flash, (Dual Tone Flash); Video Recording: With 2160p (4K); Secondary: 8.0 Megapixels, (88 Degree Wide Angle,F2.0 Aperture,Low Light Mode); Camera Flash: No; Camera Features: Touch focus, PDAF Sensor, Gesture Shot, Laser Auto Focus, Vo ...

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Asus ZenFone 3 5.2 ZE520KL