Flash firmware on Samsung Galaxy A20s
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How to flash Samsung Galaxy A20s?
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.
Many programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone slows down a lot during operation.
The OS does not match the system requirements of the smartphone.
Where can I find the firmware?
On the website of your phone manufacturer.
On specialized services where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos and transfer it to your computer.
Insert an SD card into the gadget. It must have enough memory for the firmware.
Find information about your smartphone model.
Fully charge your device.
Find and download the archive with Firmware.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
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.
On the next screen, you need to select the 'TWRP FLASH' item 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.
When the file is loaded, you need to 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.
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 required files to the memory card. Using a PC or laptop card reader.
Insert a memory card into your 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. 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, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
Now you can start flashing. Click the 'Install' button.
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 storage to which the files were copied.
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, accompanied by logging and filling in the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: Sim Type: Dual Sim, GSM+GSM; Dual Sim: Yes; Sim Size: Nano+Nano SIM; Type: Color IPS LCD screen (16M); Touchscreen: Yes, with Multitouch; Size: 5.8 inches, 720 x 1560 pixels; Aspect Ratio: 19.5: 9; PPI: ~296 PPI; Features: yes with waterdrop notch; Notch: Yes, Water Drop Notch; RAM: 3 GB; Storage: 32 GB; Card Slot: Yes, upto 512 GB; GPRS: Yes; EDGE: Yes; 3G: Yes; 4G: Yes; VoLTE: Yes; Wi-Fi: Yes, with wifi-hotspot; Bluetooth: Yes, v4.2; USB: Yes, microUSB v2.0; USB Features: USB Tethering, USB Charging; GPS: Yes; Fingerprint Sensor: Yes, Rear; Sensors: Light sensor, Proximity sensor, Accelerometer; 3.5mm Headphone Jack: Yes; Rear Camera: 13 MP + 5 MP with autofocus; ...
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