You do not need download games from nurisam anymore. Use children category to run games on the latest samsung B series firmwares. Look closer at
SamygoTrojaHorse. Put your needed samygo folder inside /telnet-enabler/ next to /telnet and you be able copy it and run on TV.
How to copy to TV -
read here.
I do not know what is your problem with greyed out wiselink write on, but if copy to tv function is available, where is the problem? Anyway, you can change greyed options over ex-link cable.