Nokia 206 Flashing by ATF
1- Open atf shortcut.
2- Select CPU type as Infineon.
3- 206: RM 872 as model no.
4- Click on Phoenix INI.
5- Choose factory reset.
6- Click on Flash.
7- Switch off the Mobile & press On/Off key while connecting to PC.
8- Flashing starts and when completed process done will appear.