I assume you already found a version of bcwipe that works, but to document the answer for others who might search the forums:
The bcwipe in telemetric's collie feed works under pdaXii13 (presumably also beta3):
http://www.tyrannozaurus.com/feed/contribs...e.pdaxrom.feed/The bcwipe in the cacko feed also works under beta3 (I've used that in the past), you'll just have to move or symlink the binary to something in the path.
Maybe there are other packages floating around?
Cheers!