Firmware update 1.3.0.x

[londonuser]

Please post impressions here

My impression is that with firmware 1.3.0.x the sound reproduction has degraded. Although when I raised the issue with the manufacturers the support team says it is only a change in the volume curve, my impression is that there has been a direct or indirect change in equalization. 
I have some Phantoms at home which I have upgraded and one at the office which I have not upgraded. Although it is not possible to match the volume controls, the sound of the guitars for instance sounds in my opinion much less transparent with the new firmware. I generally feel that with the new firmware the sound has become rather average from what I though was pretty outstanding before.
I have inquired about reverting to the 1.2 firmware but there is no provision for it.