1, is there a master reset for the transmitter?
I see there are model resets but I'd like to wipe everything and start over.

2, is it possible to change or lock the model menus?
I bought a used dx3s and I was resetting all the model memory slots, 2 of the models wont reset. Model slots 4 and 5 don"t have the reset model option when selected and are missing a few other settings as well. Puzzling.

Download the manual from the Spektrum website

Cheers

I have the manual, but thanks for your help anyway...

So here are the screens I'm getting.

here is the normal screen on slots 1,2,3,6,7,8,9,10


and here is the screen on slots 4,5. much fewer options.


Screen 1 is in the manual but not screen 2. Not sure if this is a setting option or how to get it back. If this isn't right I guess it's got to go back to horizon.

Select the models that you get the funky screen on. Go to "SYSTEM". Go to "LIST" and select "EXPERT" vs. "STANDARD" which it is set at now.

Thank you very much for that. Problem solved!

No problem. Glad I could help.