Bootloader, iOS and secure connection

[Marcel Mulder]

Hi All,

Does anybody has a working setup using SD 7.1.0 with SDK 7.2.0, iOS 8, DFU with a secure connection? When I use no encryption it works, but when I enable encryption Toolbox is complaining about wrong handles. I do call sd_ble_gatts_service_changed() returning NRF_SUCCES. Which apparently only works??? when I use and open connection. Somebody else seen this problem?

Regards, Marcel

[Hung Bui]

@Marcel: The main point is to have iOS to do a service discovery when we switch to bootloader. The reason why it worked when there is no bonding is that iOS will do service discovery everytime it connect to a unbonded device (if there is a service changed characteristic on it). I just tried here with SDK v8.0 DFU example and it worked pretty smooth on iOS. I modified so that the hrm dfu example require bonding. And I just have to click Upload on nRFToolbox to have the app write 0x01 to DFU control point, switch to DFU bootloader, send service changed indication, have iOS do service discovery, and then upload the new image, everything was done when the link was encrypted. I would suggest you to try with new SDK example and can record a sniffer trace and see what happens when switching to DFU when bonded.