stmflashloader -c --pn 3 --br 115200 --to 2000 -e --all -i STM32F10xxBxx -d --a 8000000 --v --fn E:\RomWrite\project.hex

C:\WINDOWS>STMFlashLoader

STMicroelectronics UART Flash Loader command line v2.1.0

Usage :

 STMFlashLoader.exe [options] [Agrument][[options] [Agrument]...]

 -?                   (Show this help)

 -c                   (Establish connection to the COM port)

    --pn  port_nb     : e.g: 1, 2 ..., default 1

    --br  baud_rate   : e.g: 115200, 57600 ..., default 57600

    --db  data_bits   : value in {5,6,7,8} ..., default 8

    --pr  parity      : value in {NONE,ODD,EVEN} ..., default EVEN

    --sb  stop_bits   : value in {1,1.5,2} ..., default 1

    --ec  echo        : value ON or OFF ..., default is OFF

    --to  time_out    : (ms) e.g 1000, 2000, 3000 ..., default 5000

 -i  device_name      (e.g STM32_Low-density_16K, [See the Map directory])

 -e                   (erase flash pages

    --all all pages   : erase all pages

    --sec number_of_pages_group pages_group_codes : erase specified group pages

 -u                   (Upload flash contents to a .bin, .hex or .s19 file )

    --fn  file_name   : full path name of the file

 -d                   (Download the content of a file into MCU flash)

    --a   address(hex): start @ in hex ; ignored if it is not a binary file

    --fn  file_name   : full path name (.bin, .hex or .s19 file)

    --v               : verify after download

    --o               : optimize; removes FFs data

 -r                   (Run the flash code at the specified address

    --a address(hex)  : address in hexadecimal)

 -p        (Activate or diasactivate protections)

    --ewp  : enable write protection for sector codes (e.g 1,2,etc.)

    --dwp  : disable write protection

    --drp  : disable read protection

    --erp  : enable read protection, all arguments following this one will fail

 -o                   (Get or set option bytes)

    --get --fn file_name : get option bytes from the device

                           and write it in the specified file

    --set --fn file_name : load option bytes from the specified file

                           and write it to the device

    --set --vals --OPB hex_val : set the specified option byte; OPB in: User,

                                 RDP, Data0, Data1, WRP0, WRP1, WRP2, WRP3

 -Rts                 (set Rts line to Hi, Lo)

    --State           : State in {Hi, Lo}

 -Dtr                 (Set Rts line to Hi, Lo)

    --State           : State in {Hi, Lo}