gyro>IF that one has the same firmware of the Coship 3188, and it's possible, I have the manual here for that one. If you press MENU on remote, the first screen will be the System Main Menu.
Scroll down to the 4TH line of options "System Settings" Hit OK. On THAT submenu>scroll down to the next-to-last option (5th one from the top of the list). That will be Language setting.
Right or left arrow on remote should scroll thru the various languages.
If that doesn't get it, go back to the first Menu screen again, next to last option from top is Factory Default. If that fails, you may have a doorstop unless you can find a manual somewhere.