Hello Fabio,
For SAP Business Suite 7i2011, you require 70SWPM.SAR. I know that it is confusing, as codelines 7.03 and 7.31 for SAP_BASIS are actually the same (for more information, see the blog http://scn.sap.com/community/it-management/alm/software-logistics/blog/2012/12/21/why-ehp6-for-sap-erp-60-contains-sap-basis-731 from my collegue Boris Rubarth), but in the end, SAP Business Suite 7i2011 is based on SAP NetWeaver ABAP 7.0x. This is also outlined in detail on the info page of software provisioning manager 1.0 (see http://service.sap.com/sltoolset --> SL Toolset 1.0 --> download link for software provisioning manager 1.0).
For systems based on SAP NetWeaver 7.0x, there is no database refresh offered according to my knowledge. Mixing the media as outlined by you above unfortunately would not help, as SWPM...SAR would not support ABAP systems of SAP Business Suite 7i2011.
With higher releases, database refresh option would be available, as stated by you - and also the situation would look different for Java systems. The refresh option would be offered only for SAP Business Suite releases based on these higher SAP NetWeaver ABAP releases (such as SAP Business Suite on SAP HANA) and for Java hubs in SAP Business Suite scenarios.
Best regards,
Boris