oh, my bad... need to do it again, thanks for letting me know.
I also had a hard time to change it back too unitl I found that it was the knee joint, not pushed it correctly..
EDIT: GERWALK mode corrected
GERWALK (WARNING, backpack is mistransformed )
this pic should answer the question about the elbow (to do this you have to slide the lower arm armor out a bit.)
got caught by posted this in a wrong thread
so please see if you can see this sample pic, people can't see this may due to proxy setting, some of my friend can see it at home but not in the office.