https://devzone.nordicsemi.com/f/nordic-q-a/20439/about-change-uuidHello, I want to bring some data by UUID. I know the ble_nus_init() can set UUID and I know it was set by sd_ble_uuid_vs_add(). But this way only change the UUID while chip start up. If I want change UUID while it is working .How should I do? foren-USTelligent Community 13Tue, 14 Mar 2017 07:50:21 GMThttps://devzone.nordicsemi.com/thread/79690?ContentTypeID=1Tue, 14 Mar 2017 07:50:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7e9a453-3f9d-4914-99d9-4c6e6df59cd7H.S Lin<p>OK, I understand,thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/79689?ContentTypeID=1Tue, 14 Mar 2017 07:40:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d2dfe45e-3e95-405f-a3e9-c3a6de830ea6endnode<p>Hi,</p> <p>BLE GATT as implemented by Nordic Soft Device (stack) on nRF5x is not suited for dynamically changing ATT/GATT handles like this. So I&#39;m afraid you can only set maximum ATT table size during Soft Device init and then be adding handles (this is what you mean by &quot;UUIDs&quot; I suppose) during run-time. However when you want to hide or delete some you will need to reset the chip and start from Soft Device init again.</p> <p>Cheers Jan</p><div style="clear:both;"></div>