If you download the upgrade (Primer2_Upgrade.zip) from this page:
http://www.stm32circle.com/resources/upgrade.php
you will find two batch files:
1. Program_Primer2_CircleOS_only.bat
2. Restore_Primer2_Circle_Factory.bat
The first one will install V3.7 without any application, and the scond one will install the same CircleOS V3.7 with a set of 15 applications.
Now if you want to debug one of your application (from RIDE7), you will have to copy the elf file (Primer2_Circle.elf) in your \Program Files\Raisonance\Ride\Lib\ARM\CircleOS\ directory.
If after launching one of this batch file, you don't have V3.7, please let me know (but I hope their contents is correct...).