Latest Nintendo Mobile DSi user agents:

User Agent Browser Device
Opera/9.50(Nintendo DSi; Opera/507; U; en-US) Opera 9 DSi
Opera/9.50(Nintendo DSi; Opera/507; U; en-GB) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; ja) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; it) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; fr-CA) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; fr) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; es-LA) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; es-ES) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; en-US) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; en-GB) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/507; U; de) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/483; U; es-LA) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/483; U; en-US) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/483; U; en-GB) Opera 9 DSi
Opera/9.50 (Nintendo DSi; Opera/446; U; ja) Opera 9 DSi
Opera/9.30 (Nintendo DSi; Lite; ; 2077-4; /21.0(A); en) Opera 9 DSi
Opera/65.50 (Nintendo DSi; Opera/507; U; de) Opera 65 DSi
Opera/30.50 (Nintendo DSi; Opera/507; U; de) Opera 30 DSi
Mozilla/5.0 (X11; Nintendo DSi) AppleWebKit/601.1 (KHTML, like Gecko) Tesla QtCarBrowser Safari/601.1 Safari DSi
Mozilla/5.0 (Nintendo DSi; GNU/Linux) AppleWebKit/601.1 (KHTML, like Gecko) Tesla QtCarBrowser Safari/601.1 Safari DSi