FW version failure DFU OTA

[StephaneJ]

Hi,

I create my application image using nrfutil like this :

nrfutil pkg generate  --hw-version 52 --sd-req 0x00A8 --application-version 1 --application ../nRF5_SDK_15_0_0/examples/....../some_app.hex --key-file my_key.pem FW_image.zip

Everything was working great so far but for test purpose I added one argument to this line :

 --application-version-string "19.03.03"

I flashed my custom board with the nRF Toolbox app without issue, but now if I want to update my board again I should always add this argument to my nrfutil line. Otherwise I get the error :

FW version failure

How can I cancel this verification ?

Thanks

[StephaneJ]

I have wipe my board and completely reset BOOTLOADER and SOFTDEVICE then reuploaded an app image to reset the previous behavior.

But I'm still curious to know if there is a better solution.