Since a direct .cia doesn't exist, you can use these common workarounds:
According to copyright laws in most regions (including the US DMCA and EU copyright directives), downloading a game you do not own is piracy. Even if you own the physical cartridge of Pokémon White 2 , downloading a CIA file of that game is technically a legal gray area, as you are not creating the backup yourself.
NDS Forwarder Generator (available via Universal-Updater).
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