Can't connect to external HD on Router

Using the latest Seas0npass and ATV (Black) i am nö longer able to Mount my external hd which is connected to my wireless router.
This was easily possible before with the previous seas0npass version by entering the ip address, username and password via samba.
But now I alwaysdo get a connection error. When if I fill out workgroup with “workgroup”.

Need some help urgently ;(

Keep your settings like you’ve always have. Then try resetting the ATV by holding DOWN and MENU…count to about 7 then release.

Sorry. But it didn’t help. Still error code 13.