DFU Firmware Update not working, unlikely error

[anthony]

Hello

I try make a firmware update with nrf toolbox for iOS and i have a popup with "Please enable Service Changed Indication in your firmware".

In code, I have an error: "error in writing characteristic 00001531-XXXXXXXXXXXXXXXXX and error Unlikely error".

What do you think about this?

Thanks

[Hung Bui]

@anthony: Please do what suggested in nRFtoolbox: "Please enable Service Changed Indication in your firmware"

Make sure you have the service changed indication in your DFU service.

You can send me a screenshot of what you have in your attribute table, using Master Control Panel.