Flash files are used for doing software or update the mobile old firmware. Nokia developers are releasing and putting updated and free link for mobile flashers on its official servers. You can update your mobile old firmware online if your mobile can support online updating. If you want to flash Nokia 220 here you will found latest flash files. The latest flash files with its latest updates available to download directly for free of cost without waiting. You can download latest version firmware setup i.e 12.00.11. It is already tested as well and good working software setup. This Nokia model BB5 firmware Other groups are DCT3, WD2, and DCT4. It contains MCU, ppm, and cnt file it. The MCU is the main software setup file, the ppm is for language and the cnt contains content package as well as others to successfully flash it or upda and contains wallpapers, games, logos, etc. The MCU in most models ends with mcusw, the ppm ends with an alphabet while the cnt has the words ucp, nai or image in it.
Before flashing please don't forget to take backup of your important data. Because after flashing you will lose your data and your mobile will be restored in its original settings.