yes you can update your mx5 to either the latest stable version ( 126.96.36.199) or the latest beta build ( 188.8.131.52 ) .
The only languages are english and chinese.
sadly no information is available for the realse of the international version,we’re hoping that the developers are working on it.
@dvidmolla download the latest version from here for the 184.108.40.206 version and from here for the latest beta version.
after you downloaded them,place them on your phone . using file explorer from your phone click the update.zip and either select if you want to erase user data or not. ( i recommend clearing it to prevent any bugs from appearing)