I`ve been searching and reading a lot, but cant find anything related to Batch 7, most of posts are for batch 8.
I have S7 B7 with September`s firmware. On Bitmain website available is December`s version-does anyone have any issues with the newest firmware? Does the newest firmware make any difference?

Another issue is loudness.
Did anyone change fans-any opinions.
Right now my fans are working on 60% -3960 and 3720 with average temp 62C but even they are in different part of house, behind locked door , still can hear them really loud.
should i lower fan speed percentage to make them quieter?
Does it make sens to put big pedestal fan -40cm to get extra cooling?

thanks for any info