Hi Ricardo,
The firmware image is already in the chip. As was introduced in section 4.2.1, it consists of 5 parts: softdevice, bootloader, environment, FW1 and FW2.
By doing a “full reflash”, the environment part gets cleared, and the other 4 parts get updated. By following section 4.2.2.2 of DWM1001 Firmware User Guide, or following Chapter 2 of Gateway Quick Deployment Guide, you actually do this “full reflash”.
By debugging-running the simple example with the provided SES project, part FW2 gets reflashed, while in the same time, the other parts are not changed. If you open your SES project and go to Project - Option - Debug - Loader, you’ll find the Flash addresses defined. You can take this as a partial reflash. Thus your node still works.
Best regards,
Weibo