Even though nobody requested it, it might be usefull for some:
I have a royaltek RBT-3000 (RBT3000) unit, and I needed a tool for downloading the data logs from it.
A small utility exists
here but of course, a compiled version of it for the zaurus is a bit tad difficult to find.
I've compiled and uploaded statically and dynamically linked versions to my
homepage as well as attaching the statically compiled version here (with libgcc and libbluetooth built in).