i am working on nrf52832 DK, i am trying to upgrade my development kit firmware using mobile
and i successfully build "secure_bootloader_ble_s132_pca10040.hex" application using segger embedded studio
i got the softdevice "s132_nrf52_7.0.1_softdevice.hex" file and after that i created dfu zip packet using "nrfutil"
so, i am trying to upload my dfu packet from my mobile, using nrf toolbox mobile app.
while uploading the dfu packets it shows "Upload failed : DFU characteristics not found" message.
please help me to solve this issue.