I want to upload mib file to the directory mib.
This in "files" Ultra (USB stick) but it failes.
I can see the MIB file in the root of the Ultra USB stick
But can not drag to the directory Mib.
How do I add it?

I can't move the file to the mib directory.
This is a externe usb-stick.
Nowbody knows?
Mikrotik?

I suggest you try to move it through FTP (Filezilla or WinSCP)

Otherwise, we'll have to learn how to change permissions in those folders via terminal.

I try that but don't work.

Use only "(data-path)/files/" directory. All other directories have read only permissions
http://wiki.mikrotik.com/wiki/Manual:The_Dude_v6/Files

So if I put it in "(data-path)/files/" how do I get the server to acknowledge that they are there and start identifying those devices?