Solution : https://service.sap.com/sap/support/notes/851881 (SAP Service marketplace login required)
Key words : 
1080/mimes/applets/absolute paths, usual mime objects, ~urlmime service parameter, mimeurl bhtml function, ~appletserver service parameter, 1080/scripts/wgate/webgui/, ~appletserver = /mimes/applets/, 1080/mimes/applets/, jar reason, turn analyzes
Related Notes : 
       
| 563161 | SAP GUI, SAP ITS & SAP IGS patches on Service Marketplace | 
| 335521 | ITS patch installation of kernel files | 
| 330793 | Downloading patches |