XS712Tv2 factory resets itself

Bought a used XS712Tv2 on eBay back in July. I had a lot of trouble with setting it up initially. Once I got it working I upgraded the firmware to latest and stored the latest firmware on both image1 and image2. Periodically, this thing decides to factory reset itself, often several times in a row over the course of an hour or so, then proceeds to work for months without issues, until it factory resets itself again. Room temps vary between 60F and 80F, mostly staying between 68F and 74F, current temp is 72F up from 68F earlier today. Not sure if that's enough to cause the button to press itself.

I can tell you that when it happens the fans speed up to about 50% of their speed. If I use the Reset pinhole momentary switch on the front panel, you can hear the fans go to 100%. So that's not the button. If I use the Factory Defaults pinhole momentary switch on the front panel, you don't hear the fans do anything. So I suspect something in the software is causing this. Am I being hacked? Or is there something wrong with this thing?

I also have a GS752TPv2 and it works fine, and has never once factory reset itself. It's kind of annoying that this happens because the network stops working when the VLANs and trunks aren't operating according to the config.

I have in mind to finish writing this utility that detects unauthorized factory resets and programmatically sets up the config. But that's also annoying having to fix it at alll.

Anyone ever had anything like this happen? Is it the button? The NVRAM? Why does it reset the config and reboot? If it were a hacker they'd probably be doing other things, like erase both switches and all the other things they do. I have no idea how I can get the switch to tell me why it is going down for a factory reset as it is going down to do it, and being able to trap that notification might be useful for debugging.

During normal operation, the switch shows the power supply is operational, the cable is thick and not hot to the touch, it's plugged into a UPS along with the servers. I don't have any official support for it. Still it isn't just resetting, it's resetting with a factory default config, which is weird; cause that's two things happening simultaneously. If there's a way I can set a TFTP server on any particular port to feed it the config at bootup that would also be advantageous, but I couldn't find anything in the docs that allow that. Or if I could store it on the USB and allow it to read it off the USB at boot time, that would also work.

If I have to buy another one, I have my doubts about trusting this brand in the future.