Solution : https://service.sap.com/sap/support/notes/300523 (SAP Service marketplace login required)
Key words : 
0b sr2           platform             release 32 bit        64bit           ================================================           aix                   7, 0b           platform             release 32 bit        64bit           ================================================           aix                   7, 0c           platform             release 32 bit        64bit           ================================================           aix                   7, upgrade 0/ informix dynamic server versions, ===============0/ informix dynamic server versions, individual operating system platforms, additional key words upgrade, database software ii/ actions, individual upgrade phasesv/ actions, additional bbp-specific information
Related Notes : 
       
| 329622 | Additions: Upgrading to Basis 4.6C SR1 (NDI upgrade) |