Flash firmware on ZTE Avid 4
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How to flash ZTE Avid 4?
Why reinstall the firmware?
Errors start to appear in the operating system.
Some applications stop opening.
Some programs from the Play Market do not start.
The phone restarts 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 Internet resource of the phone 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 an SD card into your phone to write the firmware to it.
Find information about your smartphone model.
Charge your phone fully.
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.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
On the main screen of the application, select '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 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
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.
The file selection screen appears. 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 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: Display size: 5 inches; Display dots per inch: 195.87 DPI; Display Type: LCD; Display Resolution: 854 x 480 px; Display finish: Scratch-resistant Dragontrail Glass; Display total pixels: 409920; Operating System: Android 7.0 Nougat; CPU Cores: 4; Processor Speed: 1.1GHz (MetroPCS says 1.4GHz on one section of their website, but says only 1.1GHz on another); RAM: 2GB; Weight: 5.6 ounces; Thickness: 0.36 inch(es); Width: 2.83 inch(es); Height: 5.7 inch(es); Ounces per cubic inch: 0.96 oz/cu in; Available colors: Slate; Camera Resolution: 8-megapixel; Camera flash: LED; Camera Features: Autofocus; Max Video Resolution: 1280 x 720 px; Selfie Cam Resolution: 5-megapixel; 4G N ...
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