Hi @btrue
Hope the git page worked, it has done the trick for us a lot of times:)
Anyway, below the link for the 0.0.25 rasp image
https://s3.amazonaws.com/downloads.bluerobotics.com/Pi/0.0.25/0.0.25.img.zip
Made it from the section “Previous Stable Companion Releases” at:
http://www.ardusub.com/resources/downloads.html#ardusub-firmware-files
Cheers