Xiaomi Redmi 9A android update problem

Hello, we have a problem installing Android update on Xiaomi Redmi 9A. Our devices are Android Enterprise.  we use them in lockdown mode. So end users can not press the update button. Android system update message is displayed on the top part of the screen when scrolling down. also the "update' button is active and displayed near the "Information about the phone" after You enter Administrator mode and open "Settings". Tried sending script.  writeprivateprofstring SystemUpdatePolicy SystemUpdatePolicy 1 apply SystemUpdatePolicy did not help. Phone simply seem to ignore it. Apart from message from the top of the screen disappears for some time. restart also did not help. when i try to install update manually in administrator mode the device asks to approve automatic update installation. Obviously the the script did not work. after proceeding with update device is asking to confirm if the update can be downloaded through the gsm connection? In update settings, there is "Download using mobile data" option which is obviously turned off by default. perhaps someone can help please with knowledge on how to configure all those settings using Soti Mobicontrol?