I've helped majasta out a little and found some of the files.
However I've just noticed that the http://www.gba1000.info
site appears to be gone with simply the message:
"GBA1000.info is now closed.
For information on the GB A1000 computer, please visit www.a1k.org - Amiga & Phoenix Community.
Does anyone know what is going on with Georg pulling all of his files offline and now the help site itself?