Flash firmware on Asus ZenFone 4 Selfie
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How to flash Asus ZenFone 4 Selfie?
Why reinstall the firmware?
The operating system keeps getting errors.
Some applications stop opening.
Many programs from the Play Market do not start.
The phone restarts by itself for no reason.
The phone began to work slowly.
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 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 your computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your device's battery.
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.
When you start the application for the first time, you must agree to install a new firmware and all the risks associated with this, as well as agree to grant 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, 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 your choice.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now 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 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 delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
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. 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 corrupted files when writing to the phone's memory sections.
The procedure for flashing the phone will begin, 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 (8.1 Oreo, 7.0 Nougat); CPU: Octa-core, 1400 MHz, ARM Cortex-A53, 64-bit; System chip: Qualcomm Snapdragon 430 8937 (28 nm); RAM: 4GB LPDDR3; GPU: Adreno 505; Size: 5.5 inches; Resolution: 1280 x 720 pixels, 16:9 ratio, 267 PPI; Technology: IPS LCD; Touchscreen: Capacitive, Multi-touch; Colors: 16 777 216; Screen-to-body: 70.29 %; Features: Oleophobic coating, Ambient light sensor, Proximity sensor; Internal storage: 64GB; Storage expansion: microSDXC up to 2000 GB; Main camera: 16 MP (PDAF); Front: 20 MP (Dual-Camera, Wide Angle, Flash); Rear: Single camera; Video recording: 1920x1080 (Full HD); Data Speed: LTE Cat 4 (150/50 Mbit/s), HSDPA plus (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit ...
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