Updating UUID field and advertising the updated data

[satheesh]

I had created application with enabling the UART service(as in Ble_uart_app example) and tried to update the Rx characteristics of UART service in connectable mode through nRF . If disconnected I have to transmit the data updated form app. But it seems the UUID field of normal Beacon mode and Uart service enabled mode is different (to my understanding). To update UUID characteristics what are all the steps I should follow.

[Ole Bauck]

So you want to send the characteristics data in the advertisement packet when not in a connection? You can do this for example by using the manufacturing specific data field in the advertisement packet. You can update the packet using ble_advdata_set(..) function.

See the ble_app_beacon example in the SDK or this tutorial.