OPPO firmware ozip to zip
pip install pycrypto
Prebuilt pycrypto Binaries for Windows download here: http://www.voidspace.org.uk/python/modules.shtml#pycrypto
ozip2zip.py <*.ozip>
OPPO R9s
OPPO R9s plus
OPPO R11
OPPO R11s
OPPO R11s plus
OPPO Find X