It seems that setting the Regulatory Country (under network configuration) and rebooting the device changes back to “World” after reboot.
I really only see one possible way in that this is happening:
- Setting a new value in the configuration interface and applying the setting
- The device installs a new trial installation of the OS with the new setting included
- The device reboots into that trial installation. No two things can happen:
- If the settings work (a network connection to the info-beamer service can be reestablished and info-beamer runs), this trial installation is marked as confirmed and is used from now on at reboot.
- The settings will be applied and the changed settings are now visible on the config dashboard.
- If the settings don’t work within the first 6 minutes after the reboot: Either because no network connection can be reestablished, info-beamer constantly crashes for some reason of the complete OS crashes or reboots before the trial installation can be confirmed. In all those cases after a manual (removing power, etc) or forced (after 6 minutes or due to some OS panic) reboot, the Pi will have reverted to the previous installation.
- The settings made are reverted and the device uses the previous settings. As none of them were applied, any change made in the config dashboard seems to have been reverted.
- If the settings work (a network connection to the info-beamer service can be reestablished and info-beamer runs), this trial installation is marked as confirmed and is used from now on at reboot.
The only way I can think what you see happens is if you applied those settings, the device reboots and cannot confirm the new settings and reverts them as a result.