Just installed my X9S and trying to associate my Samsung Keyboard (which is working fine with 2 X9), - I can connect the keyboard to the X9 and whatever I do get a Qwerty system - the set-up (blutooth...Android Keyboard) lets appear a jam : a choice berween German (QWERTY) and French (QWERTZ) ???? In addition the use of the virtual keyboard could be simplified for renaming files: do not display immediately the virtual keyboard when selecting "rename', but only the small window. This makes possible to navigate within the name of the file using the left/right direction keys, and then a click on OK displays the virtual keyboard. Edit: after a night and some searches the keyboard is now working fine.
Sorry part of the answer will be in French, I shall add a translation in english but some item may not be those displayed by the system were the system language is set to english. Paramètres (parameters) -> Langue et saisie (language and entry) -> Clavier Android (AOSP) (Android Keyboard (AOSP)) -> Apparence et dispositions (Appearance and arrangement) -> Style saisie perso (Personal entry style): - click on "+" - select a language - select an arrangement - save Note: French (AZERTY) is wrongly named French (QWERTZ)