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Flash firmware on Samsung Galaxy Note 20 LTE Dual SIM

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How to flash Samsung Galaxy Note 20 LTE Dual SIM?


Why reinstall the firmware?

Errors begin to appear in the Android operating system.

Some applications do not open, reinstalling which does not lead to a positive result.

Many programs from the Play Market do not work.

The phone restarts or shuts down by itself.

The phone started to work slowly.

You are not satisfied with the functionality of the stock firmware.





Where can I find the firmware?

On the website of your phone manufacturer.

On sites where developers post custom or official OS.


What should be done before installing the firmware?

Create a backup copy of all personal information: contacts, photos and transfer it to another computer.

Insert your SD card into your phone. An SD card is needed to write firmware to it.

Find out the exact model of your smartphone.

Fully charge your device.

Download 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.

When you start the application for the first time, you must agree to install the firmware, as well as agree to grant the application Superuser rights and click the 'OK' button.

On 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, the 'Select Device' drop-down list is available, in which you need to find and select the device model for installing the recovery.

After selecting a phone, the application will direct the user to a web page to download the modified recovery environment image file. Download the proposed *.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. Select the file downloaded in the previous step.

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

When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.

Write the firmware to the SD card. Using a PC or laptop card reader.

Insert a SD memory card into the phone.

To reboot in recovery, it is convenient 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 tap on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.





Firmware via TWRP

TWRP

Before flashing, you need to delete all user data from the phone, this will avoid errors in the software, as well as other problems. Press 'WIPE' on the home screen.

Everything is ready to 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

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 damaged files during recording.

The procedure for flashing the phone 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 installation procedure is indicated by the inscription 'Successful'.





Summary: OS: Android 10; Processor: Samsung Exynos 990; Processor clock: 2.70 GHz; Number of cores: 8; GPU: ARM Mali-G77 MP11; RAM: 8 GB; Internal memory: 256 GB; Interface: One UI; Memory cards: yes; Display: Color / Super AMOLED Plus; 16M colors, 60 Hz; 1080 x 2400 px (6.70") 393 ppi; ~89.2% screen-to-body ratio; Display protection: Corning Gorilla Glass 5; Type: Standard; Photo matrix: 12 Mpx; Sensor size: 1/1,76; Flash: yes LED; Digital zoom: 30x; Hybrid zoom: 3x; Video formats: H.264, H.265, MPEG4 - 24 fps; Video resolution: 7680x4320; Additional: AF, EIS, OIS, f/1.8; Photo matrix: 10 Mpx; Flash: yes; Digital zoom: yes; Additional: AF, f/2.2; A-GPS: yes; GPS module: yes; Bluetooth: yes; ED ...

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