Hello , i'm trying to implement the OTA DFU function in my custom designed board. I'm using NRF52 series. I started by flashing the flash I uploaded the softdevice132 v2 via the NRFgo and then I uploaded the ble dual bank example bootloader from SDKv11 and edited the file so that it supports the single bank mode as indicated in previous questions.
The problem I'm facing is that I tried the files on the DEVboard everything works fine the procedure as follows: 1- Flash the chip 2- upload softdevice 3- upload the bootloader
no application is installed, when I turn the DEVboard on the NRF chip enters the DFU mode automatically and I can see the advertisement on the mobile app.
when I do the same procedure on the custom board knowing that no application is uploaded the Bluetooth is not advertising and I can't find the DFUTARG in the mobile application.
I'm using an external clock for the BLE should I change any config files, why isn't the bootloader entering the DFU mode, since there is no app installed.
