Install UbuntuCore for Tiny4412, no login information

Hi all,

Today I download UbuntuCore from friendlyarm.net download page:
4412 Board (DVD-071315), below link (shared by John Smith)
https://www.mediafire.com/folder/lv501hrd7fzlj//4412Board#wlk1fmt797yld

After install ubuntucore image, my Tiny4412 need login information,
Unfortunately, I dont know login user/password.
Can anyone know the user/password, please help.

Thank you very much.

I also try with root/fa, t1/123456 but it doesn't work.