Flash firmware on Samsung Galaxy M20
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How to flash Samsung Galaxy M20?
Why reinstall the firmware?
Errors start to appear in the operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Some programs from the Play Market do not start.
The phone turns off for no apparent reason.
The phone started to work slowly.
The OS does not match the system requirements of the smartphone.
Where can I find the firmware?
On the official website 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 contacts and user data and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Find information about your smartphone model.
Fully charge your phone battery.
Find and download the archive with Firmware. 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 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, select 'TWRP FLASH' and give the application root rights.
On the main screen of the application, select 'Select Device', and find your phone model.
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, 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.
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.
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 device.
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 delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
Now you can start flashing. Click the 'Install' button.
The file selection screen is displayed. 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, 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, 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: Smart Phone OS: Android 8.1 (Oreo); Experience 9.5; Chipset: Exynos 7904 Octa (14 nm); CPU: Octa-core (2x1.8 GHz Kryo 260 Gold & 6x1.6 GHz Kryo 260 Silver); GPU: Mali-G71 MP2; Type: PLS TFT capacitive touchscreen, 16M colors; Screen Size: 6.3 inches, 97.4 cm2 (~83.6% screen-to-body ratio); Resolution: 1080 x 2340 pixels, 19.5: 9 ratio (~409 ppi density); Card slot: microSD, up to 512 GB (dedicated slot); Internal: 64 GB, 4 GB RAM or 32 GB, 3 GB RAM; Loudspeaker: Yes; 3.5mm jack: Yes; : - Active noise cancellation with dedicated mic- Dolby Atmos sound; WLAN: Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot; Bluetooth: 5.0, A2DP, LE; GPS: Yes, with A-GPS, GLONASS, BDS; Radio: FM r ...
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