The Refresh button in 4.1 looks quite anonymous. It is possible to get the "Refresh" text back.
You can edit file
C:\Program Files (x86)\SAP BusinessObjects\tomcat\webapps\
and change the line
The button has actually text but it is overriden with empty string.
You will also need to update this file in tomcat work folder.
(The users might need to clear temporary files in order to see the change)
PS. This is probably not the right way to do this but it seems to be the most straightforward.