No, there are not any changes.
username=admin without password should work after installation. There is no configuration, which is required to be configured in MikroTik RouterOS.
o shoot, my mistake
i recently learn to use Dude on MTCNA training class, we were using v3.6. I thought the username and password is the same with router username and password, which is not(now i know)
. the reason i thought that way because when we were on the class, the router username is admin, and the password is blank, for the sake of simplicity
ok, i got another problem now. i've succesfully enter the dude server on RouterOs, change its username and password, i logged out(exit dude client), when i try to connect again, i got "Error: Connect Failed: No connection could be made because the ...", i think the dude server is crashed down. how to restart it again without rebooting the router?