If you accidentally changed the radio's Menu to Chinese, there is no obvious solution as you can no longer read the menu.  There are two resolutions...

(1)  Update the firmware to 2.39 or newer.
This eliminates the language choice.
English is now the only option.

(2)  If not near a computer, the procedure below will reset the language via the keypad.


Press the following buttons:     (> = Right arrow)
Start with Procedure 1.
If the "English" option does not appear, Stop, and try procedure 2.

(1)

     Menu
      >  >  >  >  >     
     OK  OK
      >  >  >  >  >  >
     OK
      >       
     Select English
     OK

(2)

      Menu
       >  >  >  >  >     
      OK  OK
       >  >  >  >  >  >  >
      OK
       >       
      Select English
      OK

 
 
             That should do it...