when I start a DFU procedure the device is advertising empty packets

[M.Anis]

I'm testing the DFU as described in this link developer.nordicsemi.com/.../a00086.html after reseting in DFU mode, when I start the device discovery, I only get empty packets

bootloader.rar
ble_app_hrs.rar
nrfjprog_win.sh

[Hung Bui]

You mean if you hold a button and reset the chip you can enter bootloader and can do DFU, but when you do button-less, you only have the device advertise with no data at all ?

This is pretty strange. Could you zip your bootloader project and the application project and add them into your question ? A sniffer trace could be very useful.