I've been away on leave....
I haven't done the 8u1 update yet, but I'd assume that if it works fine on 8 it should be fine on 8u1. The HCL does list Megaraid 3108 controllers under the LSI manufacturer, and in that list Avago is shown too.
When I show our controller using Storcli64, it shows the firmware package as
FW Package Build = 24.21.0-0139
Hope that heals a bit
