Guillermo

The fact that the 12FG is a 14 channel set is one of the best kept secrets. I have no idea why Futaba did not publicise it more. The first 12 channels are proportional but the 2 channels 13 and 14 are digital ie they are on/off. On one of my planes I needed to use them and plugged electronic valves into 13 and 14 as they work fine with on off signal. The channels on the Tx are just the last 2 Aux channels after you have allocated everything else. It needs no updates or purchases to work. If you are unsure then plug in 2 spare servos into channels 13 and 14 and see how they work. (Channels 13 and 14 are under the bank of vertical slots.)

If you do get the software upgrade you can name all the Aux functions which is handy when you use all 14 channels. Of course the channels 13 and 14 can be assigned to any switch.

John