Hi I believe I have the solution to your issues. I spent more than 6 hours troubleshooting this.
My Antminer S2 had the same issue and I believe it's the SD card inside the Beagleboard that they're using which is a 4 gb Kingston (I'm not sure if it's genuine).
Even reflashing the sd cards with a new image and it will still not hold the settings.
I tried with a new SD card 2 gb that I had lying about and flashed it with an image I found somewhere on the forum here (i can't remember where now). Note this is not a normal flash via the GUI but it's a full sd card flash.
Step 1: Removing the beagle board and the SD card:Remove the control board (the one in the middle) and you should see a micro sd card slot. Press on it and it will pop up.
Step 2: Changing to a new SD cardDownload the official image they recommended for a 4 gb (link provided by BitMainTech) via a support e-mail
https://docs.google.com/file/d/0B9mK2-whJv8cU0Q5R1hIQTJnRVU/Put it into a sd card reader and use the below app to flash the img to the
NEW sd card.
http://sourceforge.net/projects/win32diskimager/Replace it the sd card and remount it inside. Give it a go!
If this helped you
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