You can obtain the update via the update notification the next time you start the product or you can download an install it separately
- Update 1 installer (patches an existing install of RAD Studio, Delphi or C++Builder XE5)
- ISO with Update 1 (full set of install files for Delphi and C++Builder XE5, including Update 1)
This update was made available on October 28, 2013. You can check for additional updates and later updates at http://cc.embarcadero.com/reg/rad_studio.