DFU over the air help

[Webmobi]

We wanted to update the firmware over the air, We needed help for zip file creation(.dat file, .bin file and .json file). There are many links online, We needed an link which helps us create zip file.

[Webmobi]

i installed python, and nrfutil.exe, when i enter nrfutil.exe dfu genpkg --application-version 1 --application ble_app_beacon_pca10040_s132.hex beacon.zip

Error: No such command "genpkg"