Fix coming later this month.
http://www.nintendoworldreport.com/news/26533
A bug in the June 6 3DS firmware update can cause Ridge Racer 3D to hang, according to a notice posted by Nintendo. After updating to the latest firmware version, backing out of Race Select or Machine Select in Ridge Racer 3D results in a frozen game.
Nintendo recommends that players simply avoid those actions, and rebooting if the system hangs. They will upload a new system update in the middle of June that fixes the problem.
I can't DL the update, it just tells me that my system is up to date even though the spotpass announcement of it has arrived already.SpotPass message says this evening.
Maybe the SpotPass update didn't say it, but the press release said the evening of June 6 Pacific.The US one does. It even tells you it will crash Ridge Racer. Unless they changed it from this morning.