Solution : https://service.sap.com/sap/support/notes/396644 (SAP Service marketplace login required)
Key words : 
//sapservx/general/frontend/patches/rel46d/windows/win32/, sapservx/general/frontend/patches/rel46d/windows/win32, //sapserv3/general/frontend/patches/rel46d/windows/win32/, menu option extras -> import patch, symptom back end support sem 3, 0b additional key words patch, sapsetup configuration program sapadmin, 0b sp6 patch   ftp, \\<server_name>\<sharename>\netinst\sapadmin, release 46d gui compilation 3
Related Notes : 
       
| 396640 | Implementing SEM 3.0A Frontend patch | 
| 361222 | SapPatch: Importing GUI Patches | 
| 147519 | Maintenance strategy / deadlines for SAP GUI | 
| 96885 | Downloading front end patches |