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Flash firmware on Samsung Galaxy Note 20 Ultra LTE

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How to flash Samsung Galaxy Note 20 Ultra LTE?


Why reinstall the firmware?

Errors begin to appear in the Android operating system.

Some installed applications stop opening.

Many applications from the Play Market do not start.

The phone turns off for no apparent reason.

The phone began to slow down a lot.

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





Where can I find the firmware?

On the phone manufacturer's website.

On Internet resources where users 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 an SD card into your phone to write the firmware to it.

Find out the exact model of your smartphone.

Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.

Download archive with Firmware.





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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click the 'OK' button.

Going to the next screen, select the item 'TWRP FLASH' and provide the application with 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 device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. 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, press 'OK'.

When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.

Copy the necessary files to the SD memory 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 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.

Everything is ready to start flashing. Press the 'Install' button.


TWRP

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.



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 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 installation procedure is indicated by the inscription 'Successful'.





Summary: OS: Android 10; Processor: Samsung Exynos 990 2,70 GHz; Number of cores: 8; GPU: ARM Mali-G77 MP11; RAM memory: 8 GB; Internal memory: 256 GB, 512 GB; Memory cards: microSD, microSDHC, microSDXC (max 1 TB); Main display: Dynamic AMOLED 16M colors, 120 Hz, 1440 x 3088 px (6.90") 494 ppi; Touchscreen: Yes; Digital camera: 108 Mpx; Flash: Yes, LED; Secondary camera: 10 Mpx; Video: H.264, H.265, MPEG4 - 24 fps; MP3: Yes; Speakerphone: Yes; Bluetooth: Yes, v5.0; NFC: Yes; GSM frequencies: 850/900/1800/1900; Standard UMTS: 850/900/1700/1900/2100; GPS: Yes; GLONASS: Yes; WiFi: Yes, v802.11 a/b/g/n/ac/ax; EDGE: Yes; GPRS: Yes; USB Yes, v3.1 OTG Type-C; WAP: Yes, v2.0; IrDA: -; LTE: Yes; HSCSD: -; H ...

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Samsung Galaxy Note 20 Ultra LTE