# Performing a FOTA Update Using BLE Explorer

BLE Explorer is a desktop application that runs on Windows®, developed to work with the RSL USB Dongle. To use BLE Explorer for a FOTA update, follow these steps:

| 1. | Connect FOTA_GPIO (GPIO1) to ground. After a few seconds, you can see the name RSL FOTA on the RSL BLE Explorer, as shown in the "FOTA Running" figure. After checking the name RSL FOTA, disconnect FOTA_GPIO from ground.

| 2. | Click on the Update Firmware option on the BLE Explorer and select the ble_peripheral_server_fota.fota image file. (See Chapter 1 "Performing FOTA Update with BLE Explorer" on page 1). There is a 30-second wait for image file selection. After 30 seconds, control returns to the ble_peripheral_server_fota application.

Figure: FOTA Running

| 3. | Once the FOTA firmware image file is selected, it starts updating the firmware, as shown in the "Updating Firmware" figure.

Figure: Updating Firmware

| 4. | Upon firmware update completion, Firmware update succeeded is displayed.