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: <fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>.
Official USA change-log:
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
<fill this in (manually) later>
The arm9loader wasn't changed(besides addresses).
System update report(s):