Hello
I have two files first is bootloader_dfu and second is ble_led using two files i can test FOTA on nrf52840 dev kit which is working fine but same files
used my custom board in this board i can upload zip file successfully but after uploading zip file still getting same name(DFU Trag ) show in nrf connect app
but in dev kit after uploading zip . i got Nordic_Blinky.which is show below in photo
5078.ble_led.zip3835.bootloader_dfu.hex
case 1 : for custom borad
case 2 after upload file zip on nrf52840 dev kit