anyone knows anything about the S7-20160305-700M-2fan.tar that is at bitmaintech?
for what hardware release is it?
try it and hope you don't brick your gear.
the s-7 can be set manual
70% is full speed about 4200 to 4600 rpm
so why do any firmware ? because they are know to brick miners. and disable features.
seriously does you fan spin? can you do manual settings?
if yes do not do the firmware.
55% manual drops speed down to less then killer sound maybe 3300 - 3500 rpm
35% manual gets you to 2600 - 2800 but you must lower freq.