I have an ole TK-380 portable that has been sitting on my shelf for a while. I just order a cable for it and was trying to program it with KPG-49D software that I use with my TK-880 mobiles and it is asking for a password. I have yet to find a way to override or reset it on the internet …so far.
It is Ver. 2.0 with “S” “A” ”B” “C” buttons on front.