Antminer S9 status page questions

[dinotom]

A few questions on the Antminer S9 status page
https://batlgroupimages.blob.core.windows.net:443/accessibleimages/2018-01-02.png

Three questions on the image above.

1. Why does Chain #6 chip always have a 50+ times hardware error rate than the other 2 chips, which always seem to have same number of HW's?

2. Which fan is the intake, Fan 3 or 6. Iwould assume fan 6 since intake is probably running slower than exhaust?

3. I had to upgrade firmware from Bitmain on this unit. Which was Apr 2017 version, is that the latest? Because I notice my chips are running approximately 10 deg hotter and my fan speeds are not changing and running 1000 rpm lower than they were before (likely the chip temperature rise reason) How can I get my fan speeds back up?

[fanatic26]

1. Unless you are seeing tens of thousands of errors on one board over the other there is nothing to worry about. All boards accrue hw errors while running.

2. 3 is intake normally as long as they were not plugged in backwards.

3. The newest firmware i have seen is from November of this year. The latest firmware publicly available on their site is from May of 2017.

[dinotom]

Thank you.

Where would one find the November firmware for the S9, the only firmware I see around is the Blissz firmware for the D3 from November 2017?

[sgtsminer]

https://shop.bitmain.com/support.htm?pid=00720161126080548570Q2tDBXAH065D

Antminer-S9-all-201711171757-autofreq-user-Update2UBI-NF.tar.gz

* Support S9 miners except S9-11.85T，12.93T，14T with fixed frequency
* Remove post mac address and remote stop mining interface
* Fix a bug of memory leak.
* Fix to support keep config when upgrade
* Remove unused *.bitmain.com url strings in binary file in fw.

Seems to be the latest from NOV 17, 2017 for S9 autofrequency. READ CAREFULLY NOT FOR ALL MODELS!! I have a 13.5T that is about 5 days old and this works on my unit. I can tell you that you should get a lot less errors with new firmware BUT it runs exhaust fan ~ 4200 rpm and is louder. Initially mine also ran about 2400 rpm and got a lot more errors on Chain #6 chip as well.

here is a screenshot of mine     https://www.dropbox.com/s/btf20u56nqr9uzn/S9.jpg?dl=0