Impossible to set device-mode home

Hello,

First of all happy new year.
I have been struggling with device mode:

on CRS326-24G-2S+ and CRS309-1G-8S+
Running RouterOS latest 7.7
system/device-mode/update mode=home

Then I remove AC/DC and reboot.

The two switches are still in enterprise mode.
What can I do to enable home device-mode?

Kind regards,
FFries