- The images are published with username "root" and no password (so you press enter/return when it ask for password.
- SSH or WinSCP will never work if there is no password. So you need first to set a password with Telnet to then use the SSH/WinSCP (WinSCP in FTP mode can work as FTP accept no password to login).
But do we talk about the same thing, or you talk about the Wifi Key/password to access your network ?