Mac address changes after DFU

[Newbie]

Hi,

We am using sdk 12.2.2 and nrf52. We are observing some strange behavior of chip. We have our own customized board.

The issue is mac address shown is different in application file. But once I upload ble_secure_dfu code last byte if mac address changes.

What can be issue?

Thanks,

[Hung Bui]

We change address to avoid ATT table cached on the phone. You can have a look here or at section I here.