A3640, OS3.1 and OS3.9

[Oldsmobile_Mike]

I would make an ERD floppy (tool is on the CD) then install 3.9 directly, followed by BB1, 2, 3, 4, then any additional patches or tools you require. Not to toot my own horn but there's plenty of videos on YouTube for installing 3.9.

Also I'd go with an alternate 68040 library besides the C= one, but that's just me.

[Oldsmobile_Mike]

Is there a difference between an os3.9 install between an Amiga 2000 and a 3000?  I have a os3.9 CF I built for my 2000.  Will it work straight up in a 3000?

Maybe a few math libraries, device drivers and the like.  Also if you've done any additional customizing beyond the stock install.  I would say pop in the card and see, if it throws an error message in S-S just boot without S-S and tweak till it does work.

That's how I solve all my Amiga problems.  By beating my head up against them, line by line, until they do work.