MSI - Vidilab IGP Update

Vidilab has added a couple of updates to their recent nForce2 IGP article - AGP 8x or 4x, that is the question!?. Although this article relates to an MSI motherboard, the same issue has been spotted on Abit and Biostar IGP boards. Here’s a few snippets from the second update:

We have just received updated BIOS revision from MSI, which can be downloaded from HERE. This revision will bring the video BIOS revision to either non-engineering revision or to masked engineering revision. The problem is that with this BIOS revision, we are not been able to see video BIOS screen anymore. Now, first screen an user will see is the POST screen and then it’ll boot into Windows. We have conducted new tests and AGP 4x is still the only option with which integrated graphics core works (recognized as NV17, AGP 2.0 spec, AGP 4x rate). However, one annoying fact is that with new BIOS system freezes after testing in 3D Mark03 and Unreal Tournament 2003. System didn’t lock up after running Quake III and Serious Sam…we do not belive it’s an issue with DirectX (3D Mark, UT) and OpenGL (Q3, SSam), since board experienced only stuttering and no lockups using old BIOS, v1.1.

Regarding the AGP issue, I’ve been talking to several sources and been told that nForce2 IGP actually does not support AGP 8x, and that the only working AGP 3.0 inside nForce2 chipset is the AGP bridge, a.k.a. path for external AGP graphics board.
Only thing we can conclude (for now) is - remember CeBIT last year and paper launch of the nForce 615 and 620? nForce 620 was actually nForce(1) chipset with support for DDR333 memory, but was codenamed Crush 17D/G. Crush 18G/D were known to all manufacturers as DDR333/400 chipset with AGP 3.0 spec support and GeForce4 MX integrated graphics (but there was no explanation is it NV17 or NV18)..