Refresh the Desktop
When using the SDK console for dev, new games don't show up on the games or app desktop unless you reboot. Also, if you change the GUI root icon (menu pic) you need to reboot to see those changes as well.
Here's a little trick that keeps you from having to waste time rebooting the cybiko. After loading a totally new game or changing the desktop icon, just type the following into the SDK command line:
pc on pc root
The pc on enters “Connected to PC…” mode. The pc root exits this mode and refreshes the desktop icons. It seems you have to do both. pc root alone seems to have no effect.