dumpefs and mkefs in 6.2.1B doesnt work!?

Has anyone succeeded in creating an embedded file system with +bigendian
with mkefs and then analyze it with dumpefs in 6.2.1B including the new
flash file system support?
For me dumpefs only outputs ‘crap’ and ends up in an end-less loop.

This is not my main problem but it indicates that something is wrong with
dumpefs and/or mkefs in 6.2.1B/supplemental. I cannot get the flash disk
drivers like devf-generic to understand a flash file system that has been
generated by mkefs for PowerPC (=bigendian).

regards, MB