Firmware install too fast

[spentamanyu]

No luck with any firmware.
I started using the ESP_EASY_FLASHER and found this log



######2024-12-30######
#######0.04.009#######
######FLASH INFO######
BIN file: KCS_KC868_A6_V2.2.10.bin
COM port: (COM4) USB-SERIAL CH340 (Port_#0008.Hub_#0001)
Baud rate: 115200
######POST FLASH######
No post flash information entered...
######FLASH LOG######
[esptool.exe -vv -cd nodemcu -cb 115200 -cp COM4 -ca 0x00000 -cf "D:\flash_download_tool_3.9.2\flash_download_tool_3.9.2\bin\KCS_KC868_A6_V2.2.10.bin"]
[30/12/2024 9:01:23] esptool v0.4.12 - © 2014 Ch. Klippel <ck@atelier-klippel.de>
[30/12/2024 9:01:23] setting board to nodemcu
[30/12/2024 9:01:23] setting baudrate from 115200 to 115200
[30/12/2024 9:01:23] setting port from to COM4
[30/12/2024 9:01:23] setting address from 0x00000000 to 0x00000000
[30/12/2024 9:01:23] espcomm_upload_file
[30/12/2024 9:01:23] espcomm_upload_mem
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] opening bootloader
[30/12/2024 9:01:23] resetting board
[30/12/2024 9:01:23] trying to connect
[30/12/2024 9:01:23] flush start
[30/12/2024 9:01:23] setting serial port timeouts to 1 ms
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] flush complete
[30/12/2024 9:01:23] espcomm_send_command: sending command header
[30/12/2024 9:01:23] espcomm_send_command: sending command payload
[30/12/2024 9:01:23] read 0, requested 1
[30/12/2024 9:01:23] trying to connect
[30/12/2024 9:01:23] flush start
[30/12/2024 9:01:23] setting serial port timeouts to 1 ms
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] flush complete
[30/12/2024 9:01:23] espcomm_send_command: sending command header
[30/12/2024 9:01:23] espcomm_send_command: sending command payload
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] trying to connect
[30/12/2024 9:01:23] flush start
[30/12/2024 9:01:23] setting serial port timeouts to 1 ms
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] flush complete
[30/12/2024 9:01:23] espcomm_send_command: sending command header
[30/12/2024 9:01:23] espcomm_send_command: sending command payload
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] espcomm_send_command: receiving 4 bytes of data
[30/12/2024 9:01:23] Uploading 2048576 bytes from D:\flash_download_tool_3.9.2\flash_download_tool_3.9.2\bin\KCS_KC868_A6_V2.2.10.bin to flash at 0x00000000
[30/12/2024 9:01:23] erasing flash
[30/12/2024 9:01:23] size: 1f4240 address: 000000
[30/12/2024 9:01:23] first_sector_index: 0
[30/12/2024 9:01:23] total_sector_count: 501
[30/12/2024 9:01:23] head_sector_count: 16
[30/12/2024 9:01:23] adjusted_sector_count: 485
[30/12/2024 9:01:23] erase_size: 1e5000
[30/12/2024 9:01:23] espcomm_send_command: sending command header
[30/12/2024 9:01:23] espcomm_send_command: sending command payload
[30/12/2024 9:01:23] setting serial port timeouts to 18580 ms
[30/12/2024 9:01:23] read 0, requested 1
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] warning: espcomm_send_command: didn't receive command response
[30/12/2024 9:01:23] warning: espcomm_send_command(FLASH_DOWNLOAD_BEGIN) failed
[30/12/2024 9:01:23] closing bootloader
[30/12/2024 9:01:23] flush start
[30/12/2024 9:01:23] setting serial port timeouts to 1 ms
[30/12/2024 9:01:23] setting serial port timeouts to 1000 ms
[30/12/2024 9:01:23] flush complete
[30/12/2024 9:01:23] error: espcomm_upload_mem failed
[2024-12-30 09:01:23] DONE! BUT WITH (1) ERRORS!
############################
[2024-12-30 09:01:23] The COM port was already in use... the post-flash did not complete.
[2024-12-30 09:01:23] JOB COMPLETED, over and out!