Device Firmware Upgrade using BLE not working

[asma]

Hello Everyone ,

I want to do application update over the air using BLE. I am using PCA100028 DK, SDK 7.2.0 and softdevice s110 7.1.0 . I am using the method given on this link developer.nordicsemi.com/.../a00066.html

In step 3 it is given to enable notification by writing 0100 i cant see anything on the DFU contol point charcteristic to write 0100 . i enabled the notification by clicking 3 downward arrows. then i followed step 4. the connection is lost with "GATT Error" and not with 'SERVER: Received Link Loss' and nothing sort of happening further i.e it is not advertising as "DFU Targ" . Is there anything i am missing .

Thanks & Regards

Asma

[asma]

Hello Hung i cannot do sniffer trace as one of my board is not working so left with one board only. As i dig into MCP log it shows connecting then connection state and then display data about all the services and characteristics discovered. After then i press DFU select the zip file as soon as i select it , it display start DFU and then come back to main screen and then display discovering services and gets connect to the same device DFU Test with no firmware update.