Solution : https://service.sap.com/sap/support/notes/81563 (SAP Service marketplace login required)
Key words : 
car          unix    car '-xvf /qopt/<volid>/ffdp/ffdp31h, additional key words fcs final delta patch, user     <sid>adm        unix    <sid>ofr, car -xvf /<cd_dir>/ffdp/ffdp31h, directory     /usr/sap/trans      unix, /400    \usr\sap\trans      windows nt 4, /400    <sid>adm        windows nt 3, spam update patch sapkd00013, patch -> apply -> spam update, /400    car -xvf <cd_drive>
Related Notes : 
       
| 76604 | Additional Info: Upgrading to 3.1H |