https://devzone.nordicsemi.com/f/nordic-q-a/123071/nrf52832-ble-random-static-address-uniqueness-accross-chip-lifeHi there, We are using for BLE communication a nRF52832 chip with random static address configuration (shown in the UART). Can we be sure that the address of a chip will be always the same all accross the life of the product ? No way to change reflashingen-USTelligent Community 13Mon, 11 Aug 2025 08:48:30 GMThttps://devzone.nordicsemi.com/thread/545161?ContentTypeID=1Mon, 11 Aug 2025 08:48:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4fdfbd85-6567-4e69-8773-66fb59313233vincent_itk<p>Thanks for you answer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/543051?ContentTypeID=1Mon, 21 Jul 2025 14:25:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a3da083a-4d9d-4047-8fe5-3b577a79c7c2Hieu<p>Hello vincent_itk,</p> [quote user=""]Can we be sure that the address of a chip will be always the same all accross the life of the product ? No way to change reflashing the chip, rebooting, erasing whole flash, locking the flash protection or any other possible action ?[/quote] <p>As long as you are&nbsp;using the default random static address without setting a different address or creating new Bluetooth identity, then you can be sure that it will stay the same.&nbsp;</p> <p>As you can find from the DevZone cases you linked, the default address is derived from factory written registers, which cannot be changed.&nbsp;Normal flash write and erase cannot change it.</p> <p>In case it isn&#39;t obvious, this constancy only remains true&nbsp;if the device isn&#39;t later updated to&nbsp;set a different address or create a new Bluetooth identity.</p><div style="clear:both;"></div>