The Old3DS+New3DS 10.0.0-27 system update was released on September 8, 2015. This Old3DS update was released for the following regions: USA, EUR, JPN, CHN, KOR, and TWN. This New3DS update was released for the following regions: USA, EUR, JPN, CHN, and KOR.
Security flaws fixed: yes, see the ARM11-kernel section here.
Change-log
Official USA change-log:
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
System Titles
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NATIVE_FIRM
Minus configmem init, exactly 4 functions were updated in the ARM11-kernel. See here for details on that.
New3DS-only
The arm9loader wasn't changed(besides addresses).
See Also
System update report(s):