At least with the GVP A500-HD8+, I am aware of only two manual editions:
The 1990 one, which is a single User's Guide containing information both on hardware setup and on FaaastPrep. Apparently it comes in US and Europe flavours.
Europe edition here. I have the US one, the cover is pink instead of greenish and there are some differences regarding hardware setup, but the FaaastPrep section is the same.
And the 1992 one, which consists of two separate User's Guides, one for hardware setup and a dedicated FaaastPrep 2.0 User's Guide. No separate US and Europe versions here as it seems. I have these manuals too, but only in physical form. I'll try to get them scanned, but keep in mind that the quality of the screenshots is already horrible in the printed manual.
Note that the FaaastPrep version that came with my 1990 version manual was 1.98, so I doubt there is anything else between that and the 2.0 edition of 1992.