Amiga 2000 rev. 4 - any use upgrading it?

[Ral-Clan]

I used a 4.3 as well for a decade (highly upgraded) without a problem.

But is the "4" (i.e. 4.0) the German A2000B?

In that case, it may not be upgrading, as it has the weird A1000 based motherboard.

[Ral-Clan]

http://www.nyx.net/~rdavis/AmigaHints2.html#upgr43
This site has information for upgrading 2000 mother boards.

Yes, but you can't simply upgrade a 4.0 motherboard to a later revision.  They are almost entirely different computers, designed by different teams working on different continents.  The A2000 4.0 is really an A1000+.