nRF5340 audio application FOTA problem with latest SDK

[muli]

I am building and testing the nRF5340 audio application from the latest SDK 2.6.0 and trying to get FOTA updates working by following this guide : 

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.6.0/nrf/applications/nrf5340_audio/doc/fota.html

When I try to build the image for flashing, even for just the app core as follows :  buildprog.py -c app -b release -d headset -m internal , I get the following error : 

Traceback (most recent call last):
  File "C:\ncs\v2.6.0\nrf\applications\nrf5340_audio\tools\buildprog\buildprog.py", line 498, in <module>
    __main()
  File "C:\ncs\v2.6.0\nrf\applications\nrf5340_audio\tools\buildprog\buildprog.py", line 384, in __main
    raise Exception("DFU arguments only accepted when using controller: " +
Exception: DFU arguments only accepted when using controller: ACS_nRF53. Please use standard tools.

How to solve this? Thanks

[Amanda Hsieh]

Hi, 

Please get in touch with your regional sales manager or use the contact form for the feature request and schedule.

Regards,
Amanda H.