I got on the train and the sign saying the destinations don't seem to work at the moment on Central trains to Birmingham new street from Nottingha, I don't know why but there never on, or there wrong. Anyway this one said, in the middle of the jurney, "The train is terminating at this station, Please leave the train as quickly as possible. If you require help please ask the conductor for help. Before that it simply said Birmingham (not Brimgingham new street, and non of the stops were displayed).
the 350 desiro's can have anything put on the side and front displays, when the 350's first came to silverlink, on a saturday when they were not used someone put 4sale on the side displays, these were in the river siddings next to platform three at nothampton, for all pax to see.
New dot-matrix or LED destination blinds are only limited to presets, but if you have access to the "programmer," you can do 0-9 A,B,C,D,E,F,W and X up to 4 digits. Power rollerblinds (3 digits) are 0-9, A-Z.
On the rollerblinds, "5EX - Free Service," has been seen before