Solution : https://service.sap.com/sap/support/notes/918370 (SAP Service marketplace login required)
Key words : 
<upgrade directory>\data\archives, eps inbox directory, modified software reason, modified sap software, bind_support_packages phase select, terms upgrade, upgrade procedure, sap version, extract_roms phase, component vendor
Related Notes : 
       
| 981804 | Add. info. on upgrading to SAP SRM LAC 6.0 | 
| 970039 | Add. info. on upgrading to SAP NW 7.0 SR2 Java |