ok i was afraid that there is no other way than to get to an oszi. - hm i will try
ok - so simply said - using your programm:
- load sketch on arduino
- power off - and plug out Vcc from modul
- power on arduino
- wait a sec
- plug in Vcc ( 3.3V) for the modul
as a lats try ?
but a realy big thanks to you so far that you bother to write this usefull programm !! 