[Solved] Sonoff not responding after flashing GUI_Generic. Error in flash_download_tool_v3.8.5

Apparently it can't be done, and I managed to damage two sonics with flashing. Previously I had uploaded other programs that worked in supli without any problem. I wanted to upload GUI_Generic and the sonoff is not responding, the LED is not lit dead. I am using ESP8266Flasher, I have uploaded it with blik and cleaned it with this program, everything is successful, I have re-uploaded some other programs from supli also in the program log everything is uploaded but sonoff is still dead. I wanted to clean it with flash_download_tool_v3.8.5 but I get the error "5-chip efuse chect fail" Do you have any idea how to put these son/off.

To the best of my knowledge, efuse fail is irreversible memory damage. In the case of the ESP8266 this can be easily fixed by replacing the memory bone with a new one, even one with a larger capacity. With the ESP8285 this cannot be done because the memory is in one bone in the processor Link . The only thing you can do is replace the processor with a working one. I don't know for what reason the memory gets corrupted, but I've had that happen too.

Sonoffs discarded.