?(using dreamup with null modem works ok. ive flashed it several times.but when i use the dcc .telnet tells me ive got the wrong login or password. ive tryed root and dreambox.is there another way in.im useing gemini image

yes i know the default pass is dreambox and the user is root but it wont except it

ive got a dreambox 500s new.but it wont except the default password or user name.can anyone help. ive heard about using the tux commander but were do i download this from