How to enable BLE DFU for bonds only? (v2.7.0)

[jerome.sc]

Hello, I have an application, that uses the Bluetooth to do over the air updates using these two configs:

• CONFIG_BOOTLOADER_MCUBOOT=y
• CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y

How can I have it so only a connection that is bonded can do a firmware update?

[Einar Thorsrud]

Hi,

For DFU over BLE you use the MCUMGR service (see example config here from the SMP server sample). As long as the application is built with support for pairing/bonding (CONFIG_BT_SMP=y), the default is to requier it to perform DFU. But. you can adjust this by setting another CONFIG_MCUMGR_TRANSPORT_BT_PERM.

[jerome.sc]

Is CONFIG_MCUMGR_TRANSPORT_BT_PERM available in v2.7.0 of the sdk?

[Einar Thorsrud]

Hi,

No, but here is a similar config for 2.7: CONFIG_MCUMGR_TRANSPORT_BT_AUTHEN