- Add a new thread to handle the firmware update process, preventing the UI from freezing.
- The UI now displays a progress bar and status messages during the update.
- The tool reads a file and sends it to the slave in chunks.
- Add a dummy for testing purposes.
- Fix Modbus communication issues by reducing the chunk size to a safe value (248 bytes) and sending data in smaller bursts to improve stability.
- Update the README with the new features and instructions.
