Main changes from version 6.1.0-12U
Date Available: 07/11/2013
The option to update StreetPass Mii Plaza is now available from the Streetpass Mii Plaza menu
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
Source:
http://www.nintendo.com/consumer/systems/3ds/en_na/system_update_history.jsp
Date Available: 07/11/2013
The option to update StreetPass Mii Plaza is now available from the Streetpass Mii Plaza menu
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
Source:
http://www.nintendo.com/consumer/systems/3ds/en_na/system_update_history.jsp