Ok guys, here it is. 🙂
You can go to Downloads page at top of this blog, find the InSight Lite entry, which is the first entry for the moment, then click on the link to a free file hosting site calls MediaFire. This is arranged as such because this blog cannot upload .catalog file, and so we park this file at the free file hosting site MediaFire.
To load the program into your FX-7400G+ or CFX-9850 for example, you must have a program link cable with the FA-123/FA-124 link software. The link software is free but not the cable. You can find out more from the shop where you got your Casio, if you do not already have one such cable.