> noticed that when I re-ran /usr/mdec/binstall by hand, it assumed I
> was running a "sun4c" architecture instead of "sun4".  I don't see
> anything listed on the FAQ or in the mail archive to date.

First I'd try to run the installboot command as binstall does, but with 
-a sun4 to force the right architecture. Then I'd try to replace the 
boot and bootxx with older versions, but that might break something else.

Harald.