flasg esp unexpected error

[m_elias]

I have tried every flasher mentioned online but nothing can flash or erase my KC868-A8. It always boots back up into the factory firmware, Software Version v2.2.2 Build Date Dec 6 2023. Esptool.py thinks it's successful. The web based Tasmota flasher reports success but inspecting the logs reveals "Invalid chip id. Expected 5 read 0. Bootloader for wrong chip?", this is the same for numerous bin files. And all the ESP-Flasher variants fail to download the partitions.bin file from github.