Secure DFU Issue

[Murugan]

Dear Nordic Team,

Thanks for supporting.

Now i am work with secure dfu using SDK12.3.0.

My Hardware :PCA10028 nrfutil version 3.1.0

Create Zip file like : nrfutil pkg generate --hw-version 51 --sd-req 0x80 --application-version 4 --application app.hex --key-file key.pem app_dfu_package.zip

1. Initially load secure_dfu_secure_dfu_ble_s130_pca10028_debug.hex through nrfgo studio
2. Advertising shows DfuTarg
3. Then try to upload zip file through nrf mobile app showing error like, Upload Failed:UNKNOWN(8202)

I dont know what i am doing wrong . Please help anyone.

[nemunoz]

Ok, I just found this post related to your problem with it own solution. Try it and tell me if you success.