Looking at
this newsgroup thread, later versions of Amix can be installed with the Archive Viper drive.
From one of the postings:
Use control D to interrupt the startup script at the first prompt ( where
you are asked to choose a keyboard ), type "viper_kludge go", the kernal
patches and you then press control D again to resume the installation
script. I have run Amiga UNIX of an A3000T with ADOS 3.1 with no problems.