/esptool

MIT LicenseMIT

ESP Tool firmware READ and WRITE

esptool.exe --chip esp32 --port COM3 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x1000

Read Flash Memory:

esptool.exe --port COM3 --baud 921600 flash_id

Read Bin File:

  • Flash Size 4MB: 0x400000
  • Flash Size 8MB: 0x800000
  • Flash Size 16MB: 0x1000000
esptool.exe --port COM3 --baud 921600 read_flash 0 0x400000 readfirmware.bin

Write Bin File:

esptool.exe --chip esp32 --port COM3 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x0 D:\newfirmware.bin