└── README.md


/README.md:
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 1 | # How to change CSC of samsung device with AT Command
 2 | this toturial is suitable for developers also if you are technician you can use serial port utility for write AT Command and read response from device.
 3 | 
 4 | This solution is compatible with ```Android 9-10```, and some device of ```Android 11```.
 5 | Solution:
 6 | * boot device to normal mode.
 7 | * Enter the code ```*#0*#``` on dialer of device
 8 |  
 9 | 
10 | # Programming:
11 | You can implement this in any desired programming language, of course, if you are a technician, you don’t need to write a program, just use free software for working with serial port.
12 | * use delay after every command, delpay count : ```1000ms (1s)```
13 | * if you are using writeline of command , you dont need to use ```\r\n```
14 | 
15 | * after dial *#0*# Open your serialport then follow this write items
16 | *  ```AT+SWATD=0\r\n```
17 | *  ```AT+ACTIVATE=0,0,0\r\n```
18 | *  ```AT+SWATD=1\r\n ```
19 | 
20 | * in this step, you need country Code to changing
21 | *  ``` AT+PRECONFG=2,YourCountryCode\r\n```
22 | * Like can be
23 | *  ``` AT+PRECONFG=2,THL\r\n```
24 | * for rebooting device
25 | *  ``` AT+CFUN=1,1\r\n```
26 | 


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