Old 3DS NATIVE_FIRM (The standard 3DS firmware - REQUIRED):
firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000002/0000005E
cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000002/cetk

New 3DS NATIVE_FIRM (The standard 3DS firmware - REQUIRED):
firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000002/0000002F
cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000002/cetk

Old 3DS TWL_FIRM (Firmware for DS/DSi games):
twl_firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000102/00000016
twl_cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000102/cetk

New 3DS TWL_FIRM (Firmware for DS/DSi games):
twl_firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000102/00000000
twl_cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000102/cetk

Old 3DS AGB_FIRM (Firmware for GBA games):
agb_firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000202/0000000B
agb_cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000202/cetk

New 3DS AGB_FIRM (Firmware for GBA games):
agb_firmware.bin: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000202/00000000
agb_cetk: http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013820000202/cetk