The "Wolverine" model is the newer. It sports UDMA-66 while older "Booster Rocket" is up to PIO-4 only.
You might connect them in reverse order, BR as master W as slave.
Or use working WD Caviar to backup.
Could be hard to find any firmware as Memtech was part of stec that is now part of HGST (Hitachi Global Storage) and these old drives can't be found on their site.
