I downloaded some python library package (for example uncompile2) from GitHub. How I can install it into Qpython from the directory in my android device with pip-console? Or at least to try install...
You could copy the modules you want installed into the site-packages folder
using a file manager open up the folder: 
/sdcard/com.hipipal.qpyplus/lib/python2.7/site-packages/

that is where you can put the modules, i have not tried it with the pip console.
How to install library with pip-console?