I would like to warn all miners, trying to or wishing to overclock their equipment with custom firmware. Under no circumstances, don't even try to overclock your ASICs with these firmwares. Either with ones for sale, or "free". I've got 2 boxes dead, one with all 3 hash plates dead, despite the fact that I've done gradual and careful overclocking, under perfect conditions with clean and cold air like in data centres. They've died without any signs of problems before it happened. As you should know, you take all responsibility for overclocking your equipment. RMA takes so much time, that it just won't be able to do reasonable ROE after return, even if Bitmain fixes it for free.
Funny enough not a single person has complained about a damaged machine. But there is a disclaimer and built-in safeguards with this firmware to prevent it from overheating. if someone throws a stupid high voltage or frequency and cooks their machine that is their own doing. There is a warning in this thread and on the download page that you can damage your machine if you push them too far. There is even a disclaimer about not making your frequency range too large from chip to chip with manual tuning.
Also, your account is old. You made no post all of 2019 except for this comment you cross commented. You never mentioned buying an asic, antminer, or any of the current-gen miners. Yes, I went through your full post history and it looks like you use to post about gpu rigs only. So I have a feeling you are just spreading a warning because you used some other firmware that had issues or this is something else....