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Flash firmware on LG Optimus Zone 3

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How to flash LG Optimus Zone 3?


Why reinstall the firmware?

Errors constantly appear in the Android operating system.

Some applications will not open.

Some programs from the Play Market do not start.

The phone turns off for no apparent reason.

The phone slows down a lot during operation.

You are not satisfied with the functionality of the stock (official) firmware.





Where can I find the firmware?

On the official website of the manufacturer.

On sites where third-party developers and phone manufacturers post custom or official OS.


What should be done before installing the firmware?

Back up your contacts and user data and transfer it to your computer.

Insert your SD card into your phone. It must have enough memory to fit the firmware.

Determine your smartphone model.

Charge your phone fully. If the battery runs out during boot, the device will no longer turn on. It will be difficult to restore it.

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





Installing TWRP Recovery

Download the Official TWRP App to your phone from the Play Market. And install this app.

At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press 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, click on the 'Select Device' drop-down list, and select your phone model.

After selecting the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. 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. Then we tell the program the path where the file loaded in the previous step is located.

Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.

The recording process is very fast, and upon completion, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.

Copy the firmware and other necessary files to the SD card.

Insert a SD 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. Open the menu and select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button.





Firmware via TWRP

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. Press the 'Install' button.


TWRP

The file selection screen is displayed. At the very top is the 'Storage' button, which allows you to switch between types of memory.

Select the location where the files were copied. Press the OK button.



TWRP

Find the file we need 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 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.

After completing the installation procedure, a 'Successful' message appears on the screen.





Summary: OS: Android (5.1); Dimensions: 5 megapixels; Flash: LED; Features: Smile detection, Voice activation, Self-timer, Autofocus, Geo tagging; Shooting Modes: Burst mode; Camcorder: 1280x720 (720p HD); Features: Video calling; Front-facing camera: 2 megapixels; System chip: Qualcomm Snapdragon 210 8909; Processor: 1536 MB RAM; Built-in storage: 8 GB; Storage expansion: microSD, microSDHC up to 32 GB; Talk time: 11.00 hoursthe average is 15 h (890 min); Stand-by time: 9.8 days (235 hours)the average is 18 days (423 h); Capacity: 1940 mAh; Type: Li - Ion; Music player: ; Filter by: Album, Artist, Genre, Playlists; Features: Album art cover, Background playback; Supported formats: ...

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