Nokia Asha 205 this is really nice phone, Here you can use RM-863 latest version-3.19 Firmware flash files. mcu,ppm,cnt just click on file for direct download. install this firmware you will have to use a software like UFS(HWK),MX Key,ATF(Advance Turbo Box),Cyclone and Infinity.
Below Download Link RM-863 Flash File For Nokia Asha 205