This article will walk you through exactly what a "fixed PKG" is, why you need it, and the safest method to install and play this masterpiece on your CFW/HEN PS3.
This guide outlines how to download and install a fixed PKG version of God of War: Ascension god of war ascension ps3 pkg fixed download install
If you need help with the actual (transfer via USB, installing PKG + RAP, loading with webMAN), let me know and I can walk you through it. This article will walk you through exactly what