Not all flash files are created equal. Many websites offer corrupted, outdated, or infected firmware. Downloading an “Extra Quality” flash file ensures:
Assertions that the file has been "100% tested" by technicians to ensure it doesn't "brick" the device. Risks & Warning Nokia Ta-1423 Flash File Download Extra Quality
Flashing will wipe data (contacts, photos, apps, internal storage). This is irreversible. If the phone still powers on, back up via Google Drive or an SD card. Not all flash files are created equal
is a basic primarily used for simple communication. Nokia Ta-1423 Flash File Download Extra Quality