Well, I did the Firmware upgrade. I succeded !
I just got at some point the strange error message bellow saying that
the ._f20config driver could not be installed ! strange !
Of course Alvin was super very helpful and responding when I contacted him about this issue. Top class support as usual !
-> Has someone experienced the same ? does it impact the whole process since at the end it is reported "firmware upgrade succesfully completed". ?
RE
the sound change: it is noticeable, and I find it more bassy and louder. Sometime I am left with the impression that I have lost a certain subtle balance, and I need to lower the volume.
So... I am not convinced, but may be my brain needs to accomodate to the new sound signature ??
--> What are your feeling about the sound after the upgrade ?