Official firmware #149075 for SM-A205S - SAMSUNGGalaxy A20
Download the latest firmware update for the Samsung Galaxy A20, but don’t forget to check whether the model number of your smartphone corresponds to the indicated one SM-A205S. The firmware code is SKC from KOREA. The product comes with PDA version A205SKSU3BTD4, CSC version A205SSKC3BTD4, MODEM version A205SKSU3BTD4. The operating system version of the given firmware is Android Q 10. Full tutorial how to flash stock firmware on Samsung devices here                                        
                                        - File name SM-A205S_1_20200413131154_4tbf08tvbj_fac
 - Firmware type 4 files
 - File size 3.09 GiB
 - Model Samsung SM-A205S
 - Operating system Android Q 10
 - PDA/AP Version A205SKSU3BTD4
 - CSC Version A205SSKC3BTD4
 - MODEM/CP Version A205SKSU3BTD4
 - Region SKC
 - 
                                                Country
                                                
                                                    
                                                        Korea                                                        
                                                     - Description SK Telecom
 - Hash 4c9e1fbae6f35b485a5645ad7340279e
 
2.Press to download
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                                    Instructions
- Download to your PC: Odin 3 latest version.
 - Next extract the firmware file.
 - You should get 1 (if 1 file, choose it here) or 5 (if 5 file, choose it here) file:
                                
- AP: "System & Recovery"
 - CP: "Modem & Radio"
 - CSC_***: "Country & Region & Operator"
 - HOME_CSC_***: "Country & Region & Operator"
 
 - Add all files to Odin 3.
 - If you want to do a clean flash, use CSC_*** either use HOME_CSC_*** to keep your data and apps.
 - Now turn off your phone and enter the Download mode. How to do all methods:
                                
- Press and hold the Power key , the Volume UP button and the Bixby key.
 - Press and hold the Volume Up and Down keys and then connect a USB cable.
 - Press and hold the Power key ,the Volume down button and the Home key.
 - Connect a USB cable, then press and hold the Bixby button and the Volume down key.
 - Press and hold the Power key and the Volume UP button.
 
 - Then connect your device to PC, Odin should detect your phone and COM port number will appear on the screen.
 - Please specify only the F.Reset time and Auto-Reboot.
 - Finally press the Start key. Your phone will now restart and disconnect from the PC.
 
        
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