is the safest official method. It automatically detects your device and downloads the latest compatible firmware version (though some users have noted it may suggest v14.78 depending on your region). Option 2: Manual Flashing with Phoenix (Advanced)
Nokia's legacy update servers for Series 40 devices were decommissioned around 2017-2018. If you go to Settings > Phone > Phone updates today, you will likely see a "Connection error" or "No updates available" message. nokia asha 302 software update 15.09 download