When you load a game (usually in .xci or .nsp format) into Egg NS, the emulator attempts to decrypt and run the software. If the emulator prompts you to "download data packet" or gives an error regarding missing files, it usually means:
If a new game demands firmware 17.0.0 and your data packet is for 15.0.1, the game will crash. Always search for an updated packet. download data packet egg ns