Hello everybody,
I'm brand new over here and I'm managing a few ASIC miners among which there's also a ZigMiner Z1+ that I've updated a week ago to the 20181105 firmware release keeping the factory default settings (i.e. no overclocking for me). The machine is pretty stable (it works in the range [5, 8] Gh/s with some peaks around ???17 Gh/s???). This week I'll proceed with the update to the latest firmware (20181116) cause I've read in your previous posts that it should allow me to control the fan speed. Am I right? The ZigMiner is noisy as hell...
Considering that the 4 ASIC boards temperatures are all around 50 C, do you think that it would be too risky to reduce the fan speed at 75% at least?

Then, I've read that many of you complained about difficulties they've encountered with the network configuration and the SSH daemon. Personally I've performed the following steps from a Linux terminal:

• I've flashed the .img file through the dd command to the USB pendrive
• I've mounted the unencrypted partition containing root folder and /etc in particular
• I've created the symbolic link:  /etc/systemd/system/multi-user.target.wants/ssh.service -> /lib/systemd/system/ssh.service
• I've changed the /etc/network/interfaces to the following in order to force DHCP (I assign the IP through static leases on our router but you can simply change the IP you'll find in this file according to your needs):
  
  

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• I've plugged the USB in the ZigMiner and I've fired it up in order for it to mount the partition containing the web interface files (the /zigminer folder) as unencrypted.
• I've copied the /zigminer/html/resources/miner.sqlite file through scp (or FileZilla if you wish) using the assigned IP and the root/envision login.
• I've edited the miner.sqlite with sqlitebrowser (or sqlite3 command as an alternative), changing the internal "settings" table in order to set the "system_protocol" to DHCP, the "system_hostname" to "ZigMiner_1" and the "system_timezone" to "Europe/Rome".
• I've copied the miner.sqlite file back to the ZigMiner and I've rebooted it.
• Rebooted the ZigMiner

The last steps were necessary cause the ZigMiner web interface didn't store the settings I mentioned from its configuration page (I guess there are some errors within its PHP code).

Through these changes I've been able to fire up the ZigMiner with the proper network settings and the SSH deamon enabled, through which I've installed the packages I commonly use to monitor a remote machine (tmux, htop, nload and so on). I've also removed the phpbash script found in the /zigminer folder for security reasons.

I hope I've not been pedantic, repeating things you already knew.