check if LE or BE
file cramfs
if the file is big endian, make it little endian with this
cramfsswap cramfs cramfs_le
extract
# if not converted via the command above, cramfs is little endian
sudo fsck.cramfs --extract=fs cramfs
# if converted via the command above, the file is renamed to "cramfs_le"
sudo fsck.cramfs --extract=fs cramfs_le