foodstick

I have an older type RB 125 opto, that programmed and works flawless. I bought two spares for the future years ago (type 2) and I can not get them to go into the program mode. . I have tried different size lipos.. I have never had this problem before with a esc.... Everything that has always worked before. It seems the problem may be right in the programming on the esc?

I have not found much encouraging info online.