Flash firmware on LG H990n V20
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How to flash LG H990n V20?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some installed applications do not open.
Some applications from the Play Market do not start.
The phone restarts by itself for no reason.
The phone began to slow down a lot.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On certain sites where developers 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 phone battery.
Find and 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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click 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, click on the 'Select Device' drop-down list, and select 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.
After downloading the image file, return 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.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Transfer the necessary files to the SD card. Using a PC or laptop card reader.
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
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.
Press the 'Install' button to start the flashing.
The file selection screen appears. 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.
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 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.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: OS: Android 7.0 Nougat; CPU: Kryo; CPU frequency: 2150.0 MHz (2-core); Chipset: Qualcomm MSM8996 Snapdragon 820; GPU: Adreno 530; RAM Memory: 4 GB; Display: LCD IPS Color (16M), 1440x2560 px (5.7") 515ppi; Touch screen: yes; Built-in memory: 32 GB; Memory card: MicroSD/TransFlash max. 200 GB; Camera: 20.66 MPx; Resolution: 5248x3936 px; Flash: LED; Autofocus: yes; Optical zoom: no; Digital zoom: yes; Second camera: 7.99 Mpx; Resolution: 3264x2448 px; Bluetooth: 4.2; EDGE: Class 33; GPRS: Class 33; GPS: yes; A-GPS: yes; LTE: LTE-FDD: 700, 800, 850, 1700/2100, 1800, 1900, 2100, 2600; GSM: 850 900 1800 1900; HSDPA: 850 900 1700 1900 2100 HSPA; HSUPA speed: 5,76 Mb/s; HSDPA speed: 42 Mb/s; USB: ...
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