# Optional backup and restore

Use the official esptool. Replace `PORT` with your badge's serial port. With the
original summit app, connect USB and hold rear SHARE until solid blue, then release.

```sh
python -m pip install esptool==5.6.0
python -m esptool --chip esp32c3 --port PORT --baud 460800 --before usb-reset --after hard-reset read-flash 0x0 0x400000 original-badge.bin
```

Keep the 4,194,304-byte backup privately. It can include photos, contacts, and
settings. For an independent check, read again to a different filename and compare
SHA-256 hashes. Return to solid-blue mode again before using the browser flasher.

To restore your own backup to the same badge:

```sh
python -m esptool --chip esp32c3 --port PORT --baud 460800 --before usb-reset --after hard-reset write-flash 0x0 original-badge.bin
```

The native flower app keeps USB awake and does not need the solid-blue sequence.
These commands do not write eFuses. See the
[official command reference](https://docs.espressif.com/projects/esptool/en/latest/esp32c3/esptool/basic-commands.html).