raise NordicSemiException("Failed to send firmware")

[armen]

when i load my new application by dfu serical it shows ,

and my commonitor show that 

my make zip command 

have anyone know solved this problem

[Bjørn Kvaale]

Which sdk version of the dfu serial example are you using? Does it make a difference if you use COM5 instead of com5 in your nrfutil command? Which version of nrfutil are you using?