I updated my IGryo to the newest version. You will find more receiver options. There was an option for the Spektrum SRXL. It works with any Xplus Rx. This will eliminate the need for additional satellites.

To answer your questions above.
1.The switch only has one light, correct. I don't leave the controller in the plane. I just plug it in when I need to change a setting.
2.The newest version is 2.1. You must download the "Powerbox Terminal" on your computer to update units. The terminal is the gateway to upgrades.
3. No idea