ESP32-S3 Firmware Backup, Erase & Flash BIN File Using Python CMD (Step-by-Step Guide)

In this video, you will learn how to backup, erase, and flash firmware on ESP32-S3 using Python command line tools.

✔ Read and backup firmware (.bin) file from ESP32-S3
✔ Erase flash memory safely (chip erase)
✔ Flash BIN firmware back to ESP32-S3
✔ Using esptool with CMD (Python)

This method is useful for firmware recovery, cloning devices, and development testing.
⚠️ Always double-check COM port and chip type before flashing.

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That link is the official Python for Windows download page:
👉 https://www.python.org/downloads/windows/

What you should do (simple steps):
Open the link
Click “Download Windows installer (64-bit)” (recommended)
Wait for .exe file to download
Run the installer
IMPORTANT: Tick ✔ “Add Python to PATH”
Click Install Now

👉 Check if the installation was successful
py --version

👉 Now enter the following command to create a full flash backup
py -m esptool --chip esp32s3 --port COM16 read_flash 0 0x1000000 backup.bin

👉 Use the following command to find the backup file:
dir backup.bin

👉Backup.bin file should be 16 MB in size

👉 Flash the backup .bin file
py -m esptool --chip esp32s3 --port COM16 write_flash 0x0 backup.bin

👉 If the backup file is in another folder, use this command
py -m esptool --chip esp32s3 --port COM16 write_flash 0x0 "D:\ESP32\backup.bin

👉Before flashing, perform an optional chip erase:
py -m esptool --chip esp32s3 --port COM16 erase_flash

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Видео ESP32-S3 Firmware Backup, Erase & Flash BIN File Using Python CMD (Step-by-Step Guide) канала Yellow Purple