Hi I've stripped and removed every chip on the A2000; cleaned the socket and chip with the spray solvent and reassembled.
The A2058, still doesn't work; looks like I've got a dud! It's now been tried in every slot with all other cards removed.
I'll go look for the A2058 disk, and see if I can just ignore to red error screen on start up.
I'm also using ROM 3.1 v40.063