Phill have you tried the new firmware on any of your S9ks ? I am about to pull the trigger on it, not that I am having any issues but there is one thing that seems to annoy me much which is the temp-reading on these gears.
Looking at the temp column, there are 2 temps (numbers) showing, the smaller number is what awesome miner reports which also seems logical judging by the average temp of the other S9 models that are located in the same place, the one to the right is externally high and just unrealistic showing temps of over 80 degrees, I don't know what those two different numbers are supposed to mean, but they just annoy the hell out of me sometimes
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I have a feeling that these two points you quoted have to do with the issue I am trying to describe here, I am just worried that the firmware might cause problems and I won't be able to revert easily, so please let me know, if you haven't upgraded i'll do it and report back.
1. Optimize over-temperature issue in special cases.
3. Optimize the cycle time of temperature detection, initialize the temperature protection detection mechanism, and optimize the processing process of reading special temperature values.