The best possible score is 10.
No specific info about version 4.2. Please visit the main page of z3x shell on Software Informer.
It is a free program that allows you to Flash Asus Android phones
Nec Smart Tool is a great tool developed by z3x-team.
Windows shell extensions extend the Windows shell.
Advanced Shell for UPX v.3.01 - advanced executable file compressor.
Wez's Evil Shell Desktop is a replacement for the default graphical shell