python ./config.py iPhone2,1_4.0.1 error occur....

hello, comex

i try to execute python code (config.py), but occur the error.

this is error code .

h2spice-ui-MacBook-Pro:config h2spice$ python ./config.py iPhone2,1_4.0.1
doing #cache
doing #kern
Traceback (most recent call last):
File "./config.py", line 406, in
make_config(args[0])
File "./config.py", line 392, in make_config
do_binary(k, v)
File "./config.py", line 332, in do_binary
binary = binary_open(filename)
File "./config.py", line 296, in binary_open
raise Exception('Unknown magic %r' % magic)
Exception: Unknown magic '\xeepX\xbe'
h2spice-ui-MacBook-Pro:config h2spice$

i don;t know why to do.

my operation system is OSX Mountain Lion
and iPhone2,1_4.0.1 firmware