iOS compatibility with DFU

[sjerlhagen]

We use nRF52832 and SDK 17.0.2 and the buttonless secure bootloader without bonding. I don’t understand the below issue, does that apply to our solution ? There will be custom apps for ios and android. Are there any other security or compatibility concerns I should be aware of ?

github.com/.../documentation.md

Known issues

1. Since iOS 13.3 (?) devices with Legacy DFU that do not use bonding, but use direct advertising in DFU Bootloader mode cannot be updated anymore. The same applies to Android devices with latest security patches. The solution is to modify the bootloader on a device to use non-direct advertising, but in order to update devices that are already in production, older, not updated devices are required. Nothing can be done on the library side, as the iOS just stopped reporting such advertising packets.

[sjerlhagen]

Yes, I have PM_SERVICE_CHANGED_ENABLED 1 in the sdk_config.h of my application. Thanks for this tip.

[Vidar Berg]

No problem. Please make sure you have the NRF_SDH_BLE_SERVICE_CHANGED option in sdk_config enabled as well. PM_SERVICE_CHANGED_ENABLED enables SC handling by the PM manager, but I'm not sure if it includes a build time check to see if the characterstic is actaully included or not.