Upgrading SAP IGS 7.00

We have SAP Netweaver 2004s we have plan to upgrading to SP12.

SAP Recommended SAP IGS 7.00 SP08, we're in SP07 (SIGS) but I would like to know how to upgrade it. Because I have tried sapcar -xvf igsexe_8-10003077.sar in the exe folder (sapmnt/instance/exe) and restarted SAP but nothing change.

Help will be rewarded.

thanks

Message was edited by:

Thomas Bailleul