nRF52840 DFU cannot find service

[duansenlin123]

• Bonding used: YES

• Library version: 4.14.0

• Device: iPhone 12

• OS: iOS 16.2

question

When upgrading to nRF52840, an error message appears indicating that the service cannot be found

Logs

0gWith ld: [Callback] Central Manager did update state to: Powered ON 1gWith ld: Connecting to Matter25Q... 0gWith ld: centralManager.connect(peripheral, options: nil) 0gWith ld: [Callback] Central Manager did connect peripheral 5gWith ld: Connected to Matter25Q 1gWith ld: Discovering services... 0gWith ld: peripheral.discoverServices(nil) 5gWith ld: Services discovered 24gWith ld: DFU Service not found 0gWith ld: The following services were discovered: 0gWith ld: - 00010203-0405-0607-0809-0A0B0C0D1910 0gWith ld: - 8D53DC1D-1DB7-4CD3-868B-8A527460AA84 0gWith ld: Did you connect to the correct target? It might be that the previous services were cached: toggle Bluetooth from iOS settings to clear cache. Also, ensure the device contains the Service Changed characteristic 1gWith ld: Disconnecting... 0gWith ld: centralManager.cancelPeripheralConnection(peripheral) 0gWith ld: [Callback] Central Manager did disconnect peripheral 5gWith ld: Disconnected

[dinesharjani]

Dumb question but, did you follow what the logs themselves suggest? That you clear the iPhone's Bluetooth cache by going to Settings -> Bluetooth -> Off and then On? Using Control Panel does not work, because it doesn't turn Bluetooth off but just stop advertising instead.

[duansenlin123]

Dumb question but, did you follow what the logs themselves suggest? That you clear the iPhone's Bluetooth cache by going to Settings -> Bluetooth -> Off and then On? Using Control Panel does not work, because it doesn't turn Bluetooth off but just stop advertising instead.

All done, it doesn't work

[philips77]

Well... looks like your device does not support Legacy or Secure DFU or the UUID aren't standard. Using the UuidHelper it is possible to change the service UUIDs if necessary.