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+(base) ton@xeon:~/Downloads/esptool-linux-amd64$ ./esptool   --chip auto -p /dev/ttyCH341USB0 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 2MB 0x0000 KCS_KC868_A16_V2.1.9.bin