A Bootloadr based STM32, you can use the ZModem protocol USB virtual serial update firmware.

STM32BootLoader
...............\CMSIS
...............\.....\Core
...............\.....\....\CM3
...............\.....\....\...\core_cm3.c
...............\.....\....\...\core_cm3.h
...............\.....\....\...\startup
...............\.....\....\...\.......\arm
...............\.....\....\...\.......\...\startup_stm32f10x_cl.s
...............\.....\....\...\.......\...\startup_stm32f10x_hd.s
...............\.....\....\...\.......\...\startup_stm32f10x_hd_vl.s
...............\.....\....\...\.......\...\startup_stm32f10x_ld.s
...............\.....\....\...\.......\...\startup_stm32f10x_ld_vl.s
...............\.....\....\...\.......\...\startup_stm32f10x_md.s
...............\.....\....\...\.......\...\startup_stm32f10x_md_vl.s
...............\.....\....\...\.......\...\startup_stm32f10x_xl.s
...............\.....\....\...\.......\gcc
...............\.....\....\...\.......\...\startup_stm32f10x_hd.c
...............\.....\....\...\.......\...\startup_stm32f10x_ld.c
...............\.....\....\...\.......\...\startup_stm32f10x_md.c
...............\.....\....\...\.......\iar
...............\.....\....\...\.......\...\startup_stm32f10x_hd.s
...............\.....\....\...\.......\...\startup_stm32f10x_ld.s
...............\.....\....\...\.......\...\startup_stm32f10x_md.s
...............\.....\....\...\stm32f10x.h
...............\.....\....\...\system_stm32f10x.c
...............\.....\....\...\system_stm32f10x.h
...............\.....\....\Documentation
...............\.....\....\.............\CMSIS_Core.htm
...............\FlashProgrammer.c
...............\hw_cfg.h
...............\JLinkLog.txt
...............\main.c
...............\output
...............\ReadMe.txt
...............\STM32BootLoader.plg
...............\STM32BootLoader.uvopt
...............\STM32BootLoader.uvproj
...............\STM32BootLoader_uvopt.bak
...............\STM32BootLoader_uvproj.bak
...............\stm32f10x_conf.h
...............\stm32f10x_it.c
...............\stm32f10x_it.h
...............\STM32F10x_StdPeriph_Driver
...............\..........................\inc
...............\..........................\...\misc.h
...............\..........................\...\stm32f10x_adc.h
...............\..........................\...\stm32f10x_bkp.h
...............\..........................\...\stm32f10x_can.h
...............\..........................\...\stm32f10x_cec.h
...............\..........................\...\stm32f10x_crc.h
...............\..........................\...\stm32f10x_dac.h
...............\..........................\...\stm32f10x_dbgmcu.h
...............\..........................\...\stm32f10x_dma.h
...............\..........................\...\stm32f10x_exti.h
...............\..........................\...\stm32f10x_flash.h
...............\..........................\...\stm32f10x_fsmc.h
...............\..........................\...\stm32f10x_gpio.h
...............\..........................\...\stm32f10x_i2c.h
...............\..........................\...\stm32f10x_iwdg.h
...............\..........................\...\stm32f10x_pwr.h
...............\..........................\...\stm32f10x_rcc.h
...............\..........................\...\stm32f10x_rtc.h
...............\..........................\...\stm32f10x_sdio.h
...............\..........................\...\stm32f10x_spi.h
...............\..........................\...\stm32f10x_tim.h
...............\..........................\...\stm32f10x_usart.h
...............\..........................\...\stm32f10x_wwdg.h
...............\..........................\Release_Notes.html
...............\..........................\src
...............\..........................\...\misc.c
...............\..........................\...\stm32f10x_adc.c
...............\..........................\...\stm32f10x_bkp.c
...............\..........................\...\stm32f10x_can.c
...............\..........................\...\stm32f10x_cec.c
...............\..........................\...\stm32f10x_crc.c
...............\..........................\...\stm32f10x_dac.c
...............\.................

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