nrf52 DFU package with SD+BL+APPS fails to reconnect on iOS nrfToolbox after updating SD+BL

[Francis]

We're seeing an issue where a dfu package containing SD+BL+Apps gets stuck on iOS nrfToolbox during DFU process after it updated the first part 1/2, which is BL+SD. The same dfu package works on the Android nrfToolbox DFU, it's able to reconnect just fine to update the 2nd part, apps.

last part of iOS log after part 1/2: Application: Upload completed in 158.17 seconds Debug: [Callback] Central Manager did disconnect peripheral Info: Disconnected by the remote device Verbose: Scanning for the DFU Bootloader... <-- stuck here

I've confirmed that the target device did reboot back to DFU and advertises just fine. Again, on Android this usecase works just fine with the same dfu package containing SD+BL+Apps.

[Gabriel C.]

Hi, I am having more or less the same issue. In my case, the APP is able to reconnect but it is stuck at:

99% (1/2)
100% (1/2)
Info: Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x):600301502f02005cc7604c
Application: Response (Op Code = Calculate Checksum, Status = Success) received
Info: Chunk CRC matches, exetuce!
Application: Writing Execute last object command...
Verbose: Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50...
Debug: peripheral.writeValue(0x04, forCharacteristic: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: WithResponse)
Info: Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x):600401
Application: Response (Op Code = Execute, Status = Success) received
Verbose: Disconnecting...
Debug: centralManager.cancelPeripheralConnection(peripheral)
Verbose: Scanning for the DFU Bootloader...
Info: Resetting peripheral
Debug: [Callback] Central Manager did disconnect peripheral without error
Info: DFU Bootloader found with name iBKSDFU52V3
Verbose: Connecting to iBKSDFU52V3...
Debug: centralManager.connectPeripheral(peripheral, options:nil)
Debug: [Callback] Central Manager did connect peripheral
Info: Connected to iBKSDFU52V3
Verbose: Discovering services...
Debug: periphera.discoverServices(nil)
Info: Services discovered
Verbose: Secure DFU Service found
Verbose: Discovering characteristics in DFU Service...
Debug: peripheral.discoverCharacteristics(nil, forService:DFUService)
Info: DFU characteristics discovered
Verbose: Enabling notifiactions for 00001531-1212-EFDE-1523-785FEABCD123...
Debug: peripheral.setNotifyValue(true, forCharacteristic: 00001531-1212-EFDE-1523-785FEABCD123)
Verbose: Notifications enabled for 8EC90001-F315-4F60-9FB8-838830DAEA50
Application: DFU Control Point notifications enabled
Application: Writing Read object information command...
Verbose: Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50...
Debug: peripheral.writeValue(0x0601, forCharacteristic: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: WithResponse)

Any solution?

Thank you.

[Hung Bui]

@Gabriel: Please create a new case, with all information about your set-up , steps you used to test. What exactly happens when you see the issue. And most importantly, if you can provide a sniffer trace, your case will be solved quicker.