(Sorry for all this posts but i REALLY need to make it work not for recreative purposes.
This is vital for my work regarding to the actual situation)
With the downgrade 1.2.0 stick works nicely
I followed precisely instructions : all necessary files has been put on the card
But when i load it in the m3 and go to to firmware update page and i press ok, it say (in french) "a memory card containing the firmware is necessary" and nothing happens..
when i checked the card one more time, it appears that there is no PS.FI2 file..