I'm using NXP Test Tool to Over-The-Air update the firmware of multiple target platforms (based on KW41z).
Updating a single module takes arround 5 minutes. But if a update 10 module at once, OTA time will increase to approx. 30 minutes!
In NXP Test Tool Software, there is a (greyed out!) checkbox for enabling OTA Multicast, which I can't set to active.
What can I do to enable OTA Multicast?
Are there some other performace optimizations I can do, to speed up OTA process?